May sound like a stupid question but which one of these drives is better? Mwave has the 30GB 75GXP (retail) for 131.00 and NewEgg has the 40GB 60GXP for 114.00, the only difference I can see is the 40GB 60GXP has a 40MB/sec transfer rate and the 30GB 75GXP has 37MB/sec transfer rate. So it seems like a no brainer to me but is there something I'm missing?? Thanks much...