which 6sn7 gives the most air??

thks will look at those- what are the pope tubes- Saw a quad set for sale and seems like a great tube but big bucks - what makes them so special-  

Ok- since there seems to be a lot  of Fake tubes out there  I want to get them from a trusted source- Brent and Andy at Vintage tubes seem to get alot of good press- Is that where I should go  or any other sources that are recommended- thanks for the advice-
On a side question the amps run on 4 -KT88's per side- Do these make a difference or are they just there for power??- thanks for the education!!!

ok  found a couple of matched sets of the 1952 sylvania bad boys ( real ones) to try should be here by early next week -

thks- Yes they are the 3 hole ones-I may pick up a set of the ken rad and mix and match as mentioned here to see what that sounds like- Again thanks to everyone for their guidance!!!