I'm running them, but pictures don't do them justice. You can come see them if you're a good swimmer
. I believe a couple of people on the mainland have them; you really should see lighting in person before deciding. Remember, ballasts play an important role in the color of the bulbs.
I'm told they drop in intensity after 6 months, but I'm not quite there yet. I can testify to that in another month or so. So far, I'm really happy with the color, but they aren't as bright as my 10ks were. I put the 10k back in the other day just to see the difference and the color about made me vomit!! I'd have to take time to go back to 10k. A third 20k woulds solve my brightness problem, but I don't have the power available.!