Maxtor used to suck. These days, all drives are about equal as far as quality is concerned. So, don't be concerned with manufacturer so much as what kind of warranty they offer. (1 year, 3 year, 5 year, etc). My WD Raptors have 5 year warranties- very good IMO. Find a drive with at least a 3 year warranty.
As for the 16MB cache- it doesn't do much in overall performance. RPM's is what really matters.
-mpjesse