Years ago I had a Rivergate 30 amp power supply. At that time it was said they were the best for our use in the hobby. They're a bit pricey compared to others you can find on the web but I have never heard of anyone who used them not absolutely love them.
http://www.rivergatedist.com/PowerSupply.htm
BrianG maybe you can chime in on them if you know about them.