You can try searching the tube and SET forums @ audioasylum.com. Not a lot of shills there (though I am aware of one tube dealer who posts as a private member) and it's pretty good info to sort through.
You are better off looking @ tube rec's for your particular gear if you are purchasing tubes for such as more important than a tube's sound is the circuit that it is used in (bad circuit design or a bad tube match to a circuit equals bad sound).
You are better off looking @ tube rec's for your particular gear if you are purchasing tubes for such as more important than a tube's sound is the circuit that it is used in (bad circuit design or a bad tube match to a circuit equals bad sound).