Mine are going on two years...I have 6...they've been dropped...banged....generally treated roughly.....All 6 still work......
I will though advise that if you buy any; make a minor modification....The dip switches are exposed...and if bumped will die.....I had two that suddenly wouldn't see the dmx signal.....the dip was bad. I bought some switches off ebay and changed them out.....All you do is open the can (very easy)...loosen two screws and drop the switch assy inside the can....Problem fixed.....
That being said; the cans work good...all six have experience no bulb failures....
They're also one of the easier to program; being 4 channel...Dealing with Weidamark and Weidamark support - has been a pleasure....