metal halide bulb suggestion?

[lifeform]

Can anyone suggest a good light bulb combination for my reef tank comprised mainly of sps corals. I have 3 250watt PFO double ended metal halide pendants with 3 electronic ballasts and 4 T5HO 80watt bulbs which are driven by two Icecap ballasts. I was thinking of trying 20k metal halide bulbs because I have seen some pictures of tanks with 20k's and they didn't look too blue but had great colors. Any suggestions? Thanks