I use 4 600 watt led lights, one of which is a 2nd gen and the rest are 4th generation. I like the idea of this thread and I will definitely post pictures of the lights and whats under them.
I grow Lemon G, I have almost 100 plants going, and I'll tell you guys right now LED's are where its at.
My recommendation is get the lights that are quad band. I can already see the difference between the stalks of this round vs, me trying the 2nd gen tri-band on its own.. they're thick as shit.
I'll go take some pictures right now and post them here in a couple minutes..