Aloha Charbud.

You asked:
"Any advice on purchasing ?"

My unsolicited advice?

Look for high-power emitters.
1. and 2W. leds are a bad choice for blooming.
(For reasons see "penetration misunderstood" on the IC.)
So, avoid Hydro-grow, UFOs, etc.
StraightouttaWeed is using lights with 3W. emitters that are blooming up a storm.
I have yet to see any commercial lamp hold a candela to my homebrew 15W 660s. but his come close.

Weeze, out.
Weezard Reviewed by Weezard on . Moody's first LED grow.... Alright, this is my first all LED GROW.... Previous grows: 600w HPS portable air conditioner various nutes (earth juice microblast, catalyst, grow and bloom, kool bloom, maxicrop, fulvic and humic acid and potash) happy frog soil *managed to grow good quality bud, not very high yeilds, heat was always an issue even with the portable air conditioner. I was running about 1400w of power. I have tried several strains. Blue dream is a favorite and I will be growing blue dream again Rating: 5