I think LED's are becoming the most reliable source out there, becoming.. less heat, much more efficient, conserves energy, narrows down the exact wavelengths, etc, etc.
Yea, they're a pain in the ass from the beginning; but you are the uncommon variable, ppl build these things to grow plants for a reason.
Adapt, learn, and grow. You may need a different feeding regime than under any HID's, or distance your light a little more; either way, we decide wether we succeed or fail- not the light.
Training's key; if you go LED, you need to train your plant. Idc how you want to do it, but im telling you that you'll want.