I'm finally going to get an iPod and rip my collection of 200 CD's to my PowerMac G5 and then sync to a new 60GB iPod. I am a stickler for sound quality. I own upscale stereo components, cabling, and speakers--yes they do sound better. When MP3 and mini disc were first released I was not impressed with sound quality. Now I am ready to make the digital jump. Should I encode using AAC 128 kbps or 256 kbps?