Yeah man, Their wasn't much of a price difference between CAT6 cable vs CAT5 cable so I just went with the CAT6 for the hell of it (I know im not getting cat6 speeds) I'm a networking noob so yeah....Just FYI CAT6 is useless unless you are terminating to CAT6 standards. I.E. using the crap little EZ-RJ45 crimpers aren't going to get you cat6 speeds.
cat 5 might as well = cat 6 unless you are shooting for 10gb ..so i dont get the upgrade
if you really want 10gb youd prob need stp as well,
source: i terminate this stuff all day in a data center