When they started doing Energy Star ratings for LEDs, they tried really hard to avoid the CFL fiasco; see http://www.gizmag.com/energy-s... As a result, Energy Star rated LED bulbs are pretty reliable. I have about 60 (!) in my house, bought over the last 9 months. None of the Energy Star bulbs has failed yet. Two non-energy-star LED bulbs that were several years old (from vendors not around anymore?) did fail.
I'm now slowly converting the bulbs in the house I rent out to LEDs, with the tenant's cooperation. The only two bulbs she has liked so far are the Cree 40W TW http://www.creebulb.com/Produc... (for bathrooms only - it hums too much for living room) and the Phillips 40W A15 ( http://www.homedepot.com/p/Phi... ) for everywhere else. Her dimmers are old, and most LED bulbs flicker with them; I should get her newer dimmers. Haven't had that problem much at my house.
I'm quite happy with the LEDs so far, and am writing up my experiences at http://kegel.com/energy/lights... Your mileage may vary.