BH,
Just to share my personal experience. The phoenix are really worth a try though. I changed from blv to phoenix lately and it really coloured up the sps very nicely. But I feel the growth has reduced but not considerably as compared to blv. But then again, my tank is only 2 feet and and all the sps are the most 5 inches away from the water surface. So maybe they might still be getting sufficient light. Overall, I'm happy with the phoenix bulb. Gives the whole tank a cooler and bluer effect too as opposed to the yellowish tint from BLVs.