Comparing bulbs on this ballast again one at a time. Ushio 10k, plusrite 14k and 20k. I like them all. The ushio by far is the brightest with a 99% white looking light, the 1% is a touch of yellow but is acceptable. The 14k plusrite is gorgeous with a very white light and a small touch of blue. The 20k plusrite is beautiful, crisp white with an actinic touch. I am going to have to have others look at all three to make a decision on which one is the best. Par and all the other arguable "this bulb is better" stuff is unknown on the plusrites as of now. I do know that coral was doing well under them years ago so i will go with whatever i decide has the best look to it.
@SIR PATRICK time to come on over for a lighting decision and beers...