Have Rogue Monoblocks, now what?

After hearing some Rogue equipment (and reading all the comments on Audiogon) I was able to get a pair of the monoblocks for a great price on Ebay. Now I need to figure out the next upgrade step. I have a Conrad Johnson PV5, and wonder what might match the Rogue well (besides, of course the Rogue preamps.) Or would I do better to get some NOS tubes for the CJ? I'd like to keep the preamp upgrade under $2000. I'm using Proac Tablettes now, but they'll get upgraded eventually as well. I listen to all kinds of music. Thanks.