I installed my new fixture today and I have to say that I hate the color the bulb is producing. I bought a PFO HQI pendant used off of RC. It supposably has a XM 20k. Well this has to be the yellowest 20k bulb I have ever seen. I noticed when I put the bulb in that there was no markings and I am having a hard time believing its a 20k. I know there was thread on here about people having yellow xm's but that seemed to be the 10k's. Its really not a big deal because I plan on getting a new bulb anyway but just wanting to know if I should just stay away from XM's. Has anybody else had problems with yellow 20k's from them or do you think the bulb I got may be a different bulb all together?