I took the two six-packs of 60W equivalent Cree LED bulbs down to the basement and installed 11 of the bulbs, replacing most of the remaining incandescent bulbs down there. The net result is that things are much brighter, because I've been using the GE Reveal bulbs for years, as they have good color reproduction, but a lower lumen output. The 60W Reveal bulbs put out 630 lumens. The 60W equivalent Cree LED bulbs put out 800 lumens, so they're a bit more than 25% brighter. This turns out to be pretty noticeable.
I still have a fair number of CFL bulbs scattered around the house, but -- with the exception of one basement fixture that will take a stepladder to reach and the chandelier in the living room -- I've pretty much exterminated all of the incandescent bulbs that aren't in lamps or bathrooms.
And I have enough incandescent bulbs for the bathrooms to wait it out for a while until the vanity-style LED bulbs get cheaper than $10 each. :)