So i've been perusing around doug's tubes, and I need some brand recommendations. The RV50 comes stock with Ruby 6V6's, but I'm not sure if anything would work better. I hear JJ's are quite dark, and I wouldn't want the amp any darker than it already is.

Anyway, are there better options than just replacing the Ruby's with Ruby's? I love the sound right now, I just don't know if I'm missing out on anything.
Gibson Les Paul Custom
Fender American Tele

Orange Rockerverb 50
Orange PPC412