Problem at the moment - just got the T1.
So currently have DT880, T1, HD600, HD700
Two have to go, two stay - decisions, decisions .....
Keep T1 and 600 and let go of 700 and 880
With high bitrate MP3, they sound fine. Of course, it depends on the original recording quality.
if your serious about wanting good sound, you need to forget about compressed files. those are for the iPod in the car if anything. not HD600's.
any headphone worth its salt would reveal how compressed files are crap. So if you want cans that make compressed files sound good, get some skull candy earbuds.
Yes. There are some good 128 that sound better than 256 for example. Depends on which encoder you use. Also sometimes there are settings for fast and slow, just depends. For example for AAC you can do 320 two pass, slower, better quality. Though I doubt I could tell the difference between CBR 320 and 2-pass 320.
LAME V0 is all you need. I use V2 for portable.