I have not had any trouble with them.
I have gone to Milex several times over the past 3 or 4 years. The last time was for new brakes. My experience was good. I dropped the car off, went shopping, and I picked it up. I have not had any trouble with them. They were nice, courteous, and friendly.
I am as happy as anyone can be with spending money to have their car taken apart. It is something that has to be done, and the mechanics at Milex have done it well. I have never had to take anything back and they are pretty good at about being on time. If they say it will take 2 hours, it will.