Has anyone used the PAR38 screw-in LED lights? They are found on Ebay etc. They have 168 LEDs and can be bought for vegetative stage (blue) or flowering (red). They use 14w. Would adding this to a CFL grow provide additional benefit? My hypothetical situation is: Should one add one of these to a grow, or would one be better served using that socket for another large CFL bulb (43w?), and not bother with an LED. Would this small LED bulb provide a benefit that a CFL would not?