[yh1185]

without going into crazy detail:

price (cree >>> bridgelux)
penetration (cree >>> bridgelux)
color choice (bridgelux >>> cree)
getting to say you have top of the line crees (cree >>> bridgelux)

Reality: Depending on what kind of tank, how big your tank is, and the penetration needed, that should be what determines which LED's your going to buy. As a person who has a cree setup, i would suggest at least throwing in 1-2 LEDs that aren't white/blue. The reds on some of my acans are kind of fading, so i'm looking to buy a bridelux (or another brand) LED stunner strip of some sort. If your doing DIY, what i'd do is mix both bridgelux and cree. Have 1 driver with cree's for the penetration and such and have 1 driver for bridgelux for variety and save you on some cost. (of course if your getting a bigger setup you can adjust the ratio of bridgelux to cree, but i wouldn't put them on the same drivers) Good luck!