What inputs does your PC2002M have? All that I have seen only have balanced and 1/4" inputs. You could replace the 1/4" jacks with RCA inputs if you found a preamp you really want for a good deal, but if you don't want to make a switch like that, you'll probably have to concentrate on preamps with balanced outputs.
To my knowledge, the Rogue, Anthem, and Emotiva models that you mentioned do not have a set of balanced outputs. You can usually find an Audio Research LS-2 in your price range. I like mine, but it's not really a tube preamp. There's a single 6DJ8, but it's not a preamp that I would describe as having that "tubey" midrange bloom.
To my knowledge, the Rogue, Anthem, and Emotiva models that you mentioned do not have a set of balanced outputs. You can usually find an Audio Research LS-2 in your price range. I like mine, but it's not really a tube preamp. There's a single 6DJ8, but it's not a preamp that I would describe as having that "tubey" midrange bloom.