I'm actually looking at the better reflectors now. A bit more $ but don't want to do this again. The cayman sun fixture with an electronic ballast. I'll use the phoenix 14K which I love and looks more like a 20K IMHO or go with the new Hamilton 20K which they say appears almost exactly like the phoenix with slightly more par. I have had good luck with my hamilton bulbs for the past 2 years. I ran my 14K for 18 months before replacing. I'd probably go a bit less this time as my corals suffered after about 15 or so months.
I think I want to go with three fixtures as that will give me the best spread but still am undecided about the wattage. I'd definitely do the 250's if I was only doing 2 fixtures but with three the 150 will do nicely without the power consumption 450 watts or 750 watts. Who has experience with 150 watt halides and [FONT=verdana, geneva, lucida, lucida grande, arial, helvetica, sans-serif]sps? [/FONT]