I bought a set of 8 pin locks from them about two months ago. I also have found their dual regulator design to be great. Most of the other regulators I have seen set the pressure via set screws. The regulator I got from them had dials, which is very convenient!
Fantastic service. If you have questions, E-mail them and they will get back to you...usually the same day.
I can verify that they pressure test their kegs, as I was able to get mine in person and witness the process. I liked the kegs I got so much, I went back a month later and got two used 3gal pin lock kegs from them.
If you are within driving distance, they can fill or supply a filled CO2 tank as well. (They can't ship it filled, however.)
Although I guess New Mexico is not around the corner...