I've had my DRRI for a couple of months now and just got around to replacing all the tubes with JJ's and the tone is now much warmer and fuller. The harsh brittle edge is gone. I do have a question about speakers. The Jensen RI C12K is a very nice speaker especially since it's just getting broken in. I have a Jensen RI P12N that I bought for a different amp but I ended up liking my Greenback in there better - so I have this new P12N sitting in it's box. Even though I do think the C12K is a very nice speaker, I still find myself looking for earlier breakup. When asked about the DRRI speaker choices most say stick with the C12K, many say the Weber 12F150. Anyone tried the P12N? Any suggestions from the New Eminence Red Coat/Patriot series?