We've got dimmable lights in most of the rooms of our house. Lots of recessed and track flood lights. I'm replacing them as they burn out with dimmable LEDs. These type are expensive, $15 to $35 per bulb depending on size and wattage. I've replaced some just due to the heat they put out. If I turn on all the lights in my kitchen, the heat is ridiculous. It's so much, that it too affects the cost of incandescent and halogen lighting in the summer when you have to overcome the extra heat with more A/C. The problems is, flood lights never die! So I'll eventually end up with all LEDs in place, and a huge box of flood lights in the garage.
Also in our master bath, the light bars over the vanities put out way too much heat. I replaced them with dimmable LEDs. My wife doesn't like the light color (there were three choices that range in blue content), and they make an annoying buzz sometimes. They are the standard-shaped CREE LEDs that are the cheapest LEDs you can buy. I told her to buy another color (they even have adjustable color bulbs now) and that I'd use the existing ones somewhere else, but I she' hasn't done it yet. That was a year ago.
I did put low-light CFLs in a few outdoor lights that stay on all the time. I've found they average about a year continually on, with minimal switching. After the current box runs out, I'll probably go LED on them as well since they are dropping in price.
Watch for sales and buy in bulk.