I've installed ~2000ft of "supernight" branded LED strip, mainly from the same seller that operates on ebay and amazon (ebesttek or katie_wu (numbers). i think their website is supernight.cc
don't bother with prime, they ship quick -- I've gotten packages from them from CA to AL in days.
I haven't ordered from them in a while (after the third order we stocked up) -- but I just ordered two strips for myself last night.
LED strip likes to be mounted to metal as a heatsink, if you don't have that option run them at 10v or PWM dim them for longer life.