Dollar store specials. 5000k (daylight) for veg and 3000k (soft) for flower. I did find some 2700k, which I found odd but by that time I had most of what I wanted already. It might have been good to have the odd one mixed in with the 3000k's. It started just as a veg tent as shown. Then I made a few more as I had plants that needed to be flipped into flower, then I needed more lights because they were getting bigger, then I needed more lights because the plants no longer fit into my grow space. From small things, things get out of control.
Not really complaining, for the amount of light I did not pay all that much. It is some work to wire them up, first breaking the lights apart, I had some aluminum track to use for the heatsink, then just wire them up. As a warning, you have to insulate the exposed live voltage terminals sticking out. Not a lot of hard steps but each takes time and multiply it by 9 per fixture in my case. I have about 1,400 real watts pulled from the wall. Think most are 12W bulbs, 100W equivalents.
So in a couple of years if Led technology gets much better I may jump back in but electric rates are fairly cheap here.