Sevciks screwed me over pretty good, but everyone else I have talked to has said it is the best place around, so maybe they were just being jerks when I went in.
I took my car to get it inspected and they replaced my very nice brand new windshield wipers with crappy ones, and charged me a ton for them. When I called them out on it they acted like I was accusing them of killing puppies and refused to take the charge off. My car was registered in Houston at the time, and they screwed up the form I was supposed to have to certify I drove it more in CS than Houston. When I asked them about it they kept giving me the run around, so I had to take it to get it re-inspected across the street.
Everyone else I have talked to loves them, but just be aware they can be just as bad of thieves as anyone.