I'm slowing switching over, I've got 100 light bulbs in the basement mostly recessed cans, and that's a lot of juice, I think the LED bulbs would pay themselves off pretty quickly. I started with the fluorescent that said they'd last 5 or 10 years, they take a long time to brighten up and some of them didn't last a year, luckily I went every other fixture. I've been using what ever LED's I find on sale and replacing the fluorescent and incandescent bulbs as they burn out. I've got a few that have been in over a year with no problems.
I'm hoping they last a long time because I just bought some to put in the fixtures in the vaulted ceiling that are a royal pain to change.