I just recently purchased a used Ren 30/30 Mk II, and I really like it a lot. It drives my 87db Merlin TSM-SE speakers with ease. You can easily tune the sound to your liking by changing input/driver tubes (although they are getting expensive), and the amp is highly responsive to different set-ups. I have not heard the other amps you mention, but I am sure they are great as well. Good Luck
vac or art audio
can sombody help me decide im looking at art audio diavolo or the vac 30 30 my speakers are silver line sonatinas and ra cd 55 i have not heard either one ,just going by reveiws i did audtion the vtl tiny triodes and thoght they were just great. could the art or the vac be that much better at three times the price? please help