I used Plusrite bulbs from LSE, Inc.(trustdeals) on ebay. I tried the DE 250w bulbs, never again. One the bulbs color was way off. I got 14k in and they looked like 10k. I then got 20k in that had some blue in them. The par was much less than the Phoenix I ran previously. I won't get into the issues I had with the ends of the bulbs breaking. I went through 3 sets of bulbs with that experiment....never again. If you do decide to try them, do NOT go through LSE(trustdeals), because it is the worst customer service I have ever received. He flat out lied and said he shipped the bulbs 2 different times and said the post office must have lost them and he conveniently never had a tracking number. I got my last set by having to threaten him with legal action and have him charged with theft. Amazingly I had the other set of bulbs in about 3 days. I went back to Phoenix after that.