There are several other relatively new players in the LED game worth a look. From what I've read so far the two I've provided links to below, have done extensive research & offer design innovations specific to our hobby rather than simply going with the cool white/blue colour combos offered in first generation fixtures.
Orphek claims to have developed their own very own LED based on several years of research
http://orphek.com/led/
Kessil is more of a spotlight design, using a high power LED array, rather than the commonly used Cree, Bridgelux etc
http://www.kessil.com/products/a150_...rium_light.php