Does anyone have experience with the new Elos MH bulbs? I'm using 2 x 250 MH Reeflux 10k and I like this and the whiter look (so no 20k radium for me). One of the bulbs is color shifting on me to like a blue/green color, and it's only been like 4 months use. Are there any other 10k bulbs Single Ended out there? I know the Phoenix bulbs and the Elos bulbs are 14k, but that is the most blue I will go. Elos is quite pricey at $90/bulb.