NEED ADVICE:
which hd to get 160 or 200, what are the performance advantages.
Youd probably see little difference in the slower drive if you dont use it to author movies or music, which often need the fastest drives available. for my purposes, for example, a 4200RPM 200GB HD would be perfect for me because i keep lots of movies on my macbook, and the drive is still fast enough so i can watch movies without any issues. the bootup time may potentially be slower, but im sure its marginal.