My current 175 xm 10k is starting to look more like 65k and it's time to replace it. I read one review on RC about REEFMAX bulbs and checked them out. 36 bucks for a 20k bulb is awesome, but anyone using them? There was one review it seemed to be rather positive, but I'm trying to get some input from others. Is it wise to buy 2 of these for almost the price of one "higher" end bulbs? Thanks guys!