Well thats a loaded question, lol.
I ran halides for years with the crisp white look. I run radions and 16hds now. Radions are bluer than the 16's and I like both looks.
Lighting preferences are personel as they all work if you know how to maintain a system.
I run my T5 light w a mix. FYI - this informative video was very helpful in deciding which colors to use... was amazed how different the same coral can look under different light bulb