ive seen plenty of ppl flower w. CFLs. i think HPS is trendy. not trying to say theyre not better, just that if you think about it, what do tanning salons use in their tan-beds?
fluorescents bc that most mimics sunlight, esp. the ones advertised as full-spectrum. also you cant beat the money they save and the start up costs of getting a HPS system. if money is not issue then do what you gotta do.