Ok, i will start by saying i have used and tried many headphones so far, and unfortunately i have had comfort problems with the most of the headphones i had. To give you an idea about that, i find SHP9500's very bad in terms of comfort (My ear touches the driver part and it makes my ear ache). I have also tried headphones like sennheiser px100ii (which found very comfortable by many) but found none of them completely comfortable. It was like all of the over ear headphones i have used had some problem with comfort.
So how about this one? Well I'm very suprised myself, i find these very, very comfortable. They are like small clouds on your ears. Most comfortable headphones i had so far. I don't know how they did these so comfortable but as a strong disbeliever of magic, i guess i will start to believe magic after using these. Trust me, if the comfort is the thing you want, you are in right place.
So lets talk about sound. I cant say these are as impressing as like DT880's for sure, but i don't think you can find any pair that will be this comfortable and this good in terms of sound quality at the same time for this price.
I can say these are slightly bright, but you can consider them as balanced if you dismiss that little brightness they have. Also you can also increase their bass, which can be good if you like to hear more bass in your sound. Also i have to mention even these do have 3 bass boost levels, one of them makes the sound pure trash so just think this headphone like it only has a +3db boost and nothing more in terms of bass boost.
I also have to mention that you can listen most of the genres without any problem with these, in terms of sound its a well rounder since its not biased in one particular area.
I cant say too much thing about soundstage and imagining of these headphones since my ears are not good in terms of figuring out the bigness of soundstages of headphones and such.
About usability, i really liked the detachable cable they offer, but it does'nt give you a %100 fit thanks to its odd design on the 2.5mm side but you can easily find replacement cables online. So even though the stock cable is bad (there is also a probability that mine have a issue on it) i consider replaceable cable as a plus.
In addition to that you get an amazing box and carrying case with these. I believe in market most of the companies would only sell that box for Takstar Pro82's complete price.
Oh, forgot to mention that you can use these without an amp, no problem.
So TL;DR: its the best thing you can buy at this price. IMHO you can get these and forget the rest of the headphones
Thanks for reading!

When i first listened them, i surprised how they improved the sound quality. I was thinking that i wasnt going to see a big difference compared to my notebooks sound quality at first (considering the price) but they blow my mind away. After using my notebooks sound out, this is something like miracle in terms of sound quality. Bass boost comes handy if you are listening electronic music. And i liked the volume control located in front of the device. In terms of build, i accidentally dropped them from my desk 3-4 times and nothing happened. It is looking like durable too, though i cant say that to usb out, usb cable, boost and gain switches. In terms of amplifying they are good with under 100 Ohm headphones. You can buy it if you are new into audio or you want a little thing to travel with your notebook.

Everybody knows Sennheiser. They are doing great job at delivering good sound for all prices. I am doing this review with price factor in thought.
First of all it is suprisingly detailed sounding headphone for me. I mean i am not audiophile or i didnt try much of audiophile gear but, they can race easily with px 100ii in terms of detail in my opinion.
It have a signature that bass is forward and treble is a little bit forward compared to mids, sounding bright.
Only thing i didnt like with sound is mids. They are some kind of robotic sounding and bad in terms of quality.
Lets talk about isolation, you can even use it on libraries. It is really well in terms of isolation. For the comfort, i can easily say i can wear it for hours without even noticing them.
As for desing, they are not fancy looking but they arent bad neither. I remember that i purchased them like 3 years ago and they still work well.

Final thoughts: Really good choice for who is looking for a in-ear with low budget. But with this value, you shouldnt look for a miracle to happen in terms of sound quality.

In terms of design it is good looking and cofortable. Usb is meaningless to me, my laptops built-in sound card is better sounding than that usb.
G430 sounds bad and unnatural, it shoud be better at this price. 
Still is good for casual use. It will be a little better than a casual headphone when you are watching movie or playing game because of software it has. It isnt isolates sound well and leaks a little.
Mic quality is good, if you use mic with usb then you will hear your sound as well as the listener too. So i found mic good for chatting. 
 
Final Thoughts:
I am not recommending them for listening music. Still it is good for long periods of chatting.

It has a solid build that if you want to break them, you should do something extreme to them. Still it comes with 2 years of warranty and if you do break these, you can get a new one at %50 discount. In terms of desing i really like the look of this headphone. There isnt much headphones that sounds good and look well at the same time so it is a good choice if you care about design but still use it for listening music. In terms of comfort, i am bad with all kinds of supra-aural headphones so, after 1 hour usage it gives me ear pain. As terms of sound quality, Bass that this headphones has is amazing. It still can be better but it really gives very qualitied Bass for me. As for the mids they are sounding well too, but not well as Bass does. Highs was bad in terms of engaging but after 50+ hours of burn in they gotten better, still engaging quality of this isnt that great but decent. About noise cancelling they are not very good. People will start hearing you if you listen them at high voice, and you cant hear people only if you are listening them at high voice.
 
Final Thoughts: They are good choice for portable players, sounds good for Electronic, Pop, Hip-Hop. Not very good for use in public.