Great all rounder (closed) is the Ultrasone Pro 750.
Also, when you say mixing...do you mean live mixing, or production?
The AKGs NEED an amp, and I have no experience with the FA-011...but as I've said time and time again the HD 598 is brilliant. I don't think you'd be disappointed with it if you decided to go that route, and they sound excellent unamped. With prices the way they are now you could get the 598 and a smaller amp/DAC combo.
I think that would be an excellent way to start at this hobby.
Okay so I have been narrowing down my options a little bit, hopefully I'm not going in the completely wrong direction but I'll just have to find out.
Out of the ones mentioned to me I'm starting to dig the 940's but something about the appearance bugs me. I hate being one who wants an aesthetically appealing headphone.
So to start it off, I've decided for now that I will just use my Bose around ears for general traveling around and at the office. They do a decent job at playing my music and keeps the sound in so they won't bother others and it keeps them out just as nicely. So what I'm mainly looking for now is one to primarily use at home for mixing, watching movies/gaming, and regular music usage.
I did try some open backed headphones today and really enjoyed the airy sound to them and since I'll be at home I'm not worried about bothering others with noise leaking. I still prefer closed-backs due to blocking outside sounds but open-backs will be fine. So the amount of headphones to chose from has grown more... Also when I said "heavy bass" in my first post what I really meant was something that sounded deeper then my Bose so I'm sure that won't be hard to beat.
I was looking at:
Fisher Audio FA-011
AKG 701's and 702's (Love the looks of the 01's color but like the ability to change out the wire on the 02's, also heard issues about comfort)
One thing I've read is it seems that most open-backs require an amp. Don't know if this is exactly true but I do want to try to get the best sound out of whatever I chose.
My price range is still in the 100-300 area for the headphones. An Amp if needed will just be another later purchase.