Originally Posted by mikemex
Spin rate is not the only measure. The bigger the plater capacity, the higher the transfer rate and this is the rule of thumb because most laptop hard drives cannot have more than two platers.
As the information is packed in a tighter area, the head reads more information the the same turn, wich gives you the same effect as increasing the spin rate in a smaller drive.
So the comparison is only fair if you compare drives of the same size, but I personally prefeer to have more space than more spin rate.
Spindle speed means nothing unless you look at areal density as well. You could have a 70,000 rpm drive, but if it's areal density is 1\10 of a 5400 rpm drive, it's going to be slower.
Which is the exact reason why the benchmark above shows the 100gb as being a faster disk. The only drawback to the 100gb is seek time. But as long as you're not using it as a workgroup server, that's not a huge problem.
If it were me, i'd take the 100gb. It's just as fast if not faster than the 60gb 7200rpm is most area's, you get better overall read and write speed which is great if you are constantly transfering large amounts of data constantly (think.. coping 1gb of pictures from your flash media, then moving them to a desktop machine, etc etc), it's cheaper and you get more space.