Hello All, What would you go for: 12" rev C with 768RAM and superdrive (1.33Ghz, 60 gig 4200) or 12" rev D standard with combo (1.5Ghz, 60 gig 5400) Both are new, the price is basically the same(rev C is cheaper by $10). Rev D is available "when it comes"(tm), rev C is sitting on the shelf. Main use would include mostly programming and analyzing large quantities of information from huge(over 1gig) text files for atomic trajectories. The main concern is better harddrive in the new generation, are there any benchmarks to its usefulness? Sorry if this topic has been brought up before, still I would greatly appreciate some opinions.