Yes a Deluxe has 2 6V6's...you can put 6L6's in there and get an increase in bottom and maybe (depending on the type of 6L6 you use) a slight bit more mids...that said I would stay with the 6V6's...NOTHING ELSE IN THE WORLD SOUNDS LIKE 6V6'S!!! They have this amazing natural compression and a sweet, sweet bottom end with a nice sparkling topend and the perfect midrange to blend with it all! A deluxe reverb is an amazing amp, and has a killer tone!
hhhmmmm lew might have some, he playes through a deluxe, two of them actually. Another good example is the bane Live, ed the lead singer used a deluxe on the secret samadhi album
I really like the JJ 6V6s I put in my Deluxe Reverb II. They have a great, full-bodied sound, almost like a 6L6, but they still sing like a great 6V6 should when you push them.