I have a Bosch 1/2 drill. My main use is to for auger bits to put holes in 2x framing for wiring. It was not all the expensive and it rocks... I really like Bosch tools.
If you are interested in a Milwaukee drill. Take a look at this authorized repair center. I bought a 1 1/8th rotary hammer from them and it runs like a champ. They sell new and refurbished Milwaukee tools with a 5 year warranty.
Well... speaking of cheap drills... I bought a HF clone of the HoleHawg ($59 on sale at the time) specifically to paddle mix "stuff". It's been a champ, and I don't worry about 'mucking up' my good drills.
HF also has this, which looks good but I haven't tried it.