I just got 2 of the ceramic science/SS remote lec vert reflector combos a couple weeks back for veg.The difference from my 8 bulb t5s is noticeable,lots of dense vegetation and growth and that's with the 3100k Philips not even the 4000s.
I will slowly be adding these into flower mixing with my current
gavita 6/750s also soon.
Couple quick observations,
You can buy almost 2 ceramic science kits from growershouse for every one normal SS lec,endomax,Boulder or other name brand fixture which makes them a smoking deal.
I saw someone in another thread say they run hot but that is not true IME.When I turned off 2 8 bulb t5s and turned on 2 315s temps dropped 4-6 degrees in the room.I also put a laser thermometer on the ballasts and they run 92-94 degrees while the SS remote reflector is about the same at its hottest point near the bulb base,barely warm to the touch.
Everything I run is open bulb and before I ran gavitas I ran adjusta wings with alot of success so I might try the 315s in an open wing type setup mixed with the gavitas in flower.
I think these and cobs show tremendous advantages energy usage wise for the smaller growers.Cobs are just so damn expensive up front but I hope to build and mix a couple of those in too at some point.