speedwise, is there something that will benefit from the G4?
MOS 1.5 was said to have altivec support, 3 years ago. Now I think altivec will still be around when MOS 2.0 gets released.
Altivec will creatly enhance everything that uses vector operations like Mplayer, Mencoder etc. Also Atlivec was the only reason that OS 4 was constantly higher than MOS in the DC-net stats...