I used United for a move from PA and wasn't too happy with them. They picked our stuff up on a Wednesday and told me the our stuff would arrive on Friday/Saturday at the latest. So we drove down to the Triangle Thursday.
Our stuff didn't arrive until the following Tuesday, and I never got a straight answer on when it was coming until a day ahead of time. I had to call the driver's cell phone to get an answer from anyone.
Basically we sat in an empty apartment for 5 days, sleeping on the floor with no idea where our stuff was or when it was coming. It was a good time.