Prometric Southwest Testing Center

I had to take a licensing exam for work here and was really surprised at the professionalism and the organization of the place. The service staff was very courteous about going through the initial drill of emptying pockets of cell phones, etc. I give a lot of credit to them because i am sure they have to deal with a lot of crap from people sneaking things in.
The facilities themselves were pretty clean and neat. Essentially its a few rooms with computers set up in cubes with sound proof headphones. You have to go through a drill of signing in and out and showing your empty pockets when going to the bathroom.
Although your employer/​testing agency typically sets this up and therefore its likely at the lower cost provider (aka, crappy facility with disgruntled employees), i wouldnt mind coming back here for any future exams.