I had been having issues with noisy tubes in my preamp, mostly NOS Amperex, and was getting sick of shelling out big bucks for NOS tubes. Went with some JJ 6922 Gold Pins from The Tubestore, an extra $5 for balanced triodes made them $29.95 each. Hands down the quietest 6922's I've ever used and they sound excellent.
http://www.thetubestore.com/Tubes/6922-E88CC-Tube-Types/JJ-E88CC-6922-Gold
A good current option especially if your preamp uses a lot of tubes, mine takes 6 6922's.
http://www.thetubestore.com/Tubes/6922-E88CC-Tube-Types/JJ-E88CC-6922-Gold
A good current option especially if your preamp uses a lot of tubes, mine takes 6 6922's.