Tube suggestions for hybrid integrated amp


I've had the stock tubes (12AU7) in my Rogue Sphinx for a few years now and I'm ready to upgrade.  Right now I'm leaning toward  Tungsram ECC82 but I am open to suggestions.  I'd prefer to buy within the US as I'd prefer delivery in the next ten days or so.
Speakers are old Dynaudio Contour 1.3 MkII.  The room is lively but not overly bright or ringy.  I listen to a lot of classical chamber music, combo jazz and (mostly classic) rock. 
Any suggestions appreciated.
128x128tostadosunidos
By some US - made 12AU7's. GE, RCA, Sylvania - all fine tubes and quite affordable!
I agree with jackd... Andy has repeatedly given me excellent advice and amazing tubes. Not inexpensive but actually great value.
I'll give Andy a call.  Hopefully he'll have some idea of how different tubes might affect the sound of my setup.   Thanks to all who have responded.