Me and two friends are ordering the 4G line later this week. We are going with the Bridgelux and Epistar LEDs because of the variety of colors available. We are getting a mixture of neutral white/royal blue with some Red and UV added in to fill out the spectrum more. The CREE offer only cool white and royal blue. We already have the old 60W CREE fixtures and therefore already have the cool white/royal blue. Mixing all together should help give a more complete spectrum. By the way, all CREE LEDs now available from EShine are 20% brighter than the old line. Here is a quote from them explaining :"As we use 4G construction to update 3G CREE 60W, that's why new 60W is brighter. and new CREE 60W with 90degree optics is brighter than 3G CREE 60W with 80 degree." If you can understand that???