I mainly use just 3. An 8" chef's knife will do 99% of everything you'll want to cut. From there it's a 3-4" paring knife and a 6" utility. If you eat a lot of fish, get a filet knife and of course any cheaper bread knife will do.
Victorinox or the riveted handled Cutco seem to be the best bang. Henckels or Wusthof are always up there.