Good quality LED lighting pays back fairly quickly if you are using the light 4+ hours every day (the math isnt hard). As for the "oh my eyes like xyz....", I can't say I've ever noticed it myself, no doubt the spectral analysis does show a much better spread for incandescent but I've yet to hear anyone say anything less than positive about the installs we did. As with other new technologies (renewables, electric cars etc.) some people have decided they are against it just for the hell of it instead of making an objective analysis.
As with anything you get what you pay for, a lot of people seem to think that LED bulbs are just that... a big LED. LEDs are supposed to be great and last forever, then in come the wun hungs built down to the penny and ruining the reputation.
I've just installed a load of industrial lighting for two customers, so I've researched the subject in quite a bit of detail. It gets king of annoying when you hear someone spoof off "LED lights are crap, my friend had downlights that failed after 3 month", yeah they did because he sorted by price on ebay.
Firstly there's the LED chip itself, everyone knows to look for CREE, Philips, Samsung, Bridgelux (Epistar is actually very good as well). The problem is that it's very easy for a seller or manufacturer to just claim they are using CREE when really its some no-name junk.
Epistar have a service where you can send them LEDs and they will verify that they are genuine, CREE refuse to do this (very strange) and the others I haven't tried.
Crappy LEDs give a much lower lumens per watt, there was no comparison in the genuine Epistar floodlights that we got against the "cheaper" ones from both the local wholesaler and B&Q.
Next is the quality of the driver, I dont need to explain this to any of you but there are also safety considerations. Some of the cheaper lights are just plain dangerous. The only way to verify this is a teardown, even then you will always find no name components so are at the mercy of the manufacturer.
Finally the construction quality, there are hundreds of manufacturers of these bulbs all working off common designs. I've seen some incredibly shitty build quality and some that's quite impressive.
So avoid ebay and amazon altogether, do some math and stick to a reputable supplier that offers a 3-5 year warranty. You cant really go wrong from there.