I wouldn't say "poor" - LEDs are a better choice than CFLs *especially* in a garage that may be partially heated or unheated. However, if you're using it as a "car and tool storage space" and not a workspace, that is, the lights are on generally only when you're pulling a car in or out or retrieving something and you're not spending a lot of time there, it may not be worth the money to use LEDs as the payback may not be as long as you own the home.
nate