So far I've had better experiences with integrated lighting than individual bulbs. Normally the integrated lighting means they've got more space to try and cram things like power supplies in there and can use a lot of the actual fixture to cool down the electronics. Meanwhile, fixtures designed to not care about the bulbs getting hot roast the LED bulbs and can cause early failure.
Maybe we've just had bad luck. Our integrated lights all failed in less than a year, whereas our bulbs have all lasted a few years at least so far without any failures or apparent changes.
