Experiance with the XM 20k DE 150watt?

[Froggie]

I wanted to know if anyone has any experience with the 150 watt XM 20k DE. I've seen the SE 400 Watt XM 20K bulbs and find the color very attractive and am wondering how these compare.

The reason I ask is because I'm currently running a 14.5K Giesemann 150 watt DE bulb on my tank and not really liking it. It appears a bit too yellow and doesn't really give a very attractive cast.

The tank is a 20 gallon standard so I don't have room for any additional lighting.

We're primarily keeping a mix of SPS (close to the light, centered directly under) and LPS.

(Ballasts are Icecap)

Willing to consider any alternatives people wish to suggest as well.