Thanks for all the suggestions so far!
I've decided to go for closed headphones instead of looking for both open and closed, simply because i then have the possibility to travel with them, and don't bother other people while listening. Also i have raised my pricerange up to 130$.
I narrowed the choices down to these pairs, which are within pricerange:
Ultrasone HFI-450
Sony MDR-V6 (Can't seem to find them in any online shops in my country, could they be named differently?
Sennheiser HD 380 pro
M-audio q40 / Within my pricerange, but everyone suggests getting beyer pads to put on, which then exceeds my pricelimit. It is a must for owning these?
Now i am also considering the Audio Technica M50s, and Ultrasone HFI-580, which is over my budget, but i am willing to wait a bit and save up, if there really is a large difference in soundquality by spending a little more, and getting the M50s?
also, forgot to mention that i am going to be using these without an amp.