Bose hands down takes all other sound equipment behind the local bankrupt Circuit City and puts them on their knees. Bose kills all else. When you can give me an Apple product that has a halfway decent sound let alone halfway decent speakers, drop me an email. I'll even post about it specifically. My one gripe with all Apple products is that the sound sucks. Sucks. Royally.
I almost appreciated the speakers with the iMac G4, but they don't even compare to my 10 year old JBLs. 2 to 1, everyone I know with an Apple desktop has some other brand of external speaker.
Sound =

< Sony < Bose
Contradicting arguments are unnecessary and false, simple as that. I love Bose speakers, and those that hate them say so in envy, because they don't or can't get them for themselves - by whatever means in whatever context.
You go ahead and keep rocking the iMac internals. Rip in Lossless for speakers that can't even put out 256 quality at peak. When / If these headphones come out and no one can tell the difference between 128 and 320, don't say I didn't say so...