The key with LED bulbs is to buy the branded ones, which will cost more.
The LED types used are a bit like diamonds - there are various grades, affecting both colour and life. The branded ones like OSRAM will use the higher grade ones. The cheap shite ones that you'll pick up from likes of egay are the LED equivalent of tool grade diamonds, and have a short life before their light output is unusable.
Perhaps.....maybe......do they f*ck. 
I've bought plenty of branded items that have lasted barely five minutes.
Often they just use 'a trusted brand' and link it to poor quality goods......like BUSH.
I have the advantage of 2 bros (well, I have more), one who is a commercial sparks, and the other who has some retail outlets of a type that needs bright lighting of a consistent colour.
Fortunately, through the course of their work, they have a good list of what works well over a period of years, and what is shite, so I didn't have to

. The OSRAM's here must now be out of their 4yr warranty,
But understand what you mean about brands being bought purely to rebadge cheap shite with a recognised brand... ...or even those like Sony that are still owned by the original company, but sell poorly made shite as quality, playing on their deservedly good reputation in the 80s and 90s.