I have a 37g cube with a pendant over it. It has a 250w SE MH bulb with two 32w PC's. Originally I had a hamilton 14k bulb in it. I just changed to a 12k Reeflux. I don't really like it so I plan on changing back to the Hamilton. Just suits my tastes better.
By the way, love your screen name. Typically I'm milhouse74 anywhere else, but I got here early enough to be just plain Milhouse!