That is the million dollar question. I've been going back and forth the last week and can't seem to settle on my lighting choice. My build will be a 12x12x12 nano cube or thereabouts, my budget is $230 and under for the lights, meanwhile the only two contenders are Kessil and Hd Prime +... However, my preference has always been towards silent equipment which I hear Kessil has an edge over AI Prime, however the light must be able to grow Buble Tip Nems, as that will be the focal point of the cube. If Kessil, then which model will be enough for my needs? Will the A80 be enough light energy for a BTA?!