I have had one of these bulbs in an enclosed fixture over my stair case for the past couple of years. I have not had any problems with it, while compact fluorescent bulbs did not last there.
they carry the EcoSmart bright white which is as close to the kelvin temp range as you are going to get to cool white
They get EXTREMELY hot. In fact I think these particular bulbs get hotter than incandescent bulbs. So much so that I'm actually swapping mine out for another brand because I'm not comfortable with how hot they get.
Based on the failure I have already seen, I strongly suspect increased temperature around the base of the lamp in a recessed fixture (especially within an IC can) will kill these lamps in less than 10,000 hours of service. The lamps I have are open but inverted in a ceiling fan fixture. The increased heat in this fixture no doubt played a part in killing this lamp. I strongly suspect the 25,000 hour figure the manufacturer states was probably arrived at with the lamp mounted vertically in open air with a room temperature of 70F or lower. The weak point in all of these new lamps (CFL's and LED's) appears to be the electrolytic capacitors used in the switching power supply. According to manufactures data sheets, even the best grades of these capacitors are only good for temperatures of up to 106C and at that temperature they don't last very long. To achieve a 25,000 hour life the capacitors they use cannot exceed 65C. Given how hot these things get it is pushing it even in a completely open, vertically mounted bulb!