I personally don't care for the Hamilton as it was too white, almost yellowing, even tho it was a 14K bulb.
Haven't tried the Ushio 14K, but is currently running the Ushio 20K on my 16G nanocube and I love it. It's a little dimmer than the other 14K's I have used but it's perfect here b/c the tank is only LPS/softies.
I use the 250W Phoenix 14K at home, not the 150W, but I would expect them to be the same. Love that too, a nice ice white/blue. Just added some T5 HO's for some more blue spectrum.