CFLs still have all the same drawbacks as regular tubular FLs... their lives are shortened with every flick of the switch (cathode burnout). For locations where you'd want to keep a light on 24/7, CFLs are fine. For locations where the lights are turned on and off several times a day, go with LEDs or halogen bulbs.
Also, be careful with can/pot lights and CFL/LED bulbs. The heat generated by the ballast/heatsink will cause natural air movement, but if you have a sealed/airtight fixture, it won't breath, causing all the heat to build up in the baffle. The solid state electronics in the CFL/LED will fail sooner, even though the "light" itself is still good.
Also, be careful with can/pot lights and CFL/LED bulbs. The heat generated by the ballast/heatsink will cause natural air movement, but if you have a sealed/airtight fixture, it won't breath, causing all the heat to build up in the baffle. The solid state electronics in the CFL/LED will fail sooner, even though the "light" itself is still good.