I wouldn't take my word as gospel, just another opinion in a world full of them. Opinions are like assholes, everyone has them and they all stink. I would go with HPS if you can afford only one light. HPS with a dual spectrum bulb, such as an EYE Hortilux, which is what I use in my 400W HPS system. If heat is a factor, go with a high wattage CFL (I used a 125W Feliz 6500K for vegging and they had the same in a 2700K for flowering, up to a 250W) or several low wattage CFLs of different temps. The LED technology is just too expensive and the final product too inconsistent.