256k is also what I settled on when I did a full re-rip of my collection. I think you'll be happy with that. I still have a few 128s and 160s in my collection because of downloads, stolen CDs, etc. (I've had Steve Morse: Southern Steel stolen twice now and all I've got left are my old 128 rips of it), and I'm happy with the 160's too, but I really wish I could get rid of all my 128s.