I was under the impression the xlamps were presently the brightest, so it would be "more bang for the buck." Any pointers to comparisons?

What advantages do luxeon have over xlamps?

Budget & limited space are my main considerations.
rosc2112 Reviewed by rosc2112 on . Cree Xlamp Grow-Light Schematic Design (Wanted) Been sifting through the cruft trying to find a schematic to build a grow lamp, using Xlamp LED's from Cree. Their time is now :) Yes I've seen the extraordinarily overpriced products being offered by businesses. Not worth the money if you can use a soldering kit, imo. I can solder, but I'm no engineer, so, I'm asking for help in creating a circuit design that balances low cost, simplicity of construction and high efficiency. Preferably with 120vac input (off the shelf ac-dc Rating: 5