Out of all the choices listed above i can say with out a doubt the 20k helios are awsome. My second choice would be the reeflux 10k or 12k bulb is off the hook as well. Good luck with your lighting choice as they are way to many these days. I will say that actincs are always a good choice with halides.
I just switched over from 250w 14k DE Phoenix to 250w SE Reeflux 10ks. I supplement these with 4 VHO actinics. All I can say is WOW! I believe this is the best lighting combo I've tried thus far... by far!!!
Operational cost, price point and overall coloration balanced with reasonable growth...the 14K DE Phoenix is great.
Owner of Salty Critter told me appears same or close to Aquaconnect. Used them for a year and am rather happy with them on my sunlight supply Dual HQI's.
As far as Mach5's post...If you do not care about the electrical costs (I'm able to light 2 tanks instead of 1 since I use the Phoenix without supplimentation) But A high quality 10K and almost equal atinic wattage is the best overall look in my opinion.
------>But if I did that on my setups...I'm running 4 tanks totaling 2000 watts. IF I went with the supplments I'd be at 3600 watts. So unless my coral addiction needs drop or I win the lottery, I'm going to stick with one bulb type. Based upon all of that. I'd recommend the Phoenix.