It isn't widely publicized, but the LEDs are temperature sensitive. If operated at too high a temperature they will burn out long before the widely reported 10 000 hours (or some such) prediction of lamp lifespan. For what ever LED you buy you need to find out what the optimal operating temperature is and then invest in the cooling hardware to maintain. Otherwise, the major advantage of LEDs that justify their purchase, that is, their long life, is negated.
The LED tubs for replacing T8 and T12 lamps seem to last long but I'm not very impressed with the color rendering. The color spectrum is a problem. The ratio of blue, to red and red to far red has to be right to prevent stem elongation. The elongation witnessed might not be because the plant's aren't getting enough light, but because they are getting too much or too little of a particular wavelength of light.