I'm partial to the Astrons, primarily because that is the only high current supply I have ever used. I have 1 RS20 that is 30 years old, and another that is at least 20. I had two RS35's until one was fried in a lightning strike last spring, but the other one is still solid after 10 years, and powers my TS570 with no problems. None of mine have the meters, but that really doesn't matter. You can adjust the output voltage on either the 20 or the 35,, but you have to take the case off to do it. I like them, because they just sit there and work quietly, and do not require a fan. Mike Duke, K5XU American Council of Blind Radio Amateurs