i went from 100% auto to 100% manual (except for the focus). when i am in a place i want to shoot, i usually get my settings in my "standard" with aperture >2.8 and shutter speed 125 or more and adjust the iso accordingly.
from there i only adjust the shutter speed if i have to because of lighting situation changing.
it really is quite the same like any priority mode, because i usually change only one thing (shutter speed).
also i shoot raw (i think you do, too carolyn) and this way i can still adjust a few stops in acr.
i feel quite safe in manual mode and now am learning to use the focus points, which is fabulous in settings where there is lots of clutter in the room and low lighting.
but that is off topic... ;-)
laptop hp pavilion g with 2nd monitor, pse 10, lightroom 3, acdsee 14
camera: samsung galaxy I and canon 600d (rebel T3i), lenses: canon EF 50 mm 1:1.8 II, canon EFS 18-55 mm 1:3.5-5.6 IS II