Led trial at my own house.
About six months ago I installed new GU10 and MR16 led bulbs in my house. 20 bulbs in total ranging from top of the range Phillips, through much cheaper offerings from a company called Diamond lighting and finally a 99p offerings from eBay.
Results so far
Phillips – fine no problem ( but only have 2)
Diamond lighting – 11 lights fitted. 5 have failed
eBay special- 7 still running
The failures on the Diamond lighting are to do with sets of Led chips failing. So could be to do with the the control gear in the bulb.
The cheap eBay specials do give less light than I expected. They have a claimed 5w output but are outshone by the 3.75w diamond lighting offerings. Will Lux meter them next time I have the meter with me.
Lesson so far. Go for something with a decent warranty!