Jay461,
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Regarding 6sn7 tube choices: For me, in my system, The Tungsol Black Glass Round Plate NOS are the best by a wide margin.
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The TungsolÂs are hard to find but well worth the effort/money.
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Try Bob Malecki at www.tubeseller.com or email him directly at tubeseller.com - best to email him and tell you what you are looking for. He specializes only in 6SN7's. He is not cheap, but quite honest and all of the tubes I have gotten from him have been excellent quality.
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You can email him and if he does not have a tube in stock he will contact you when he finds a pair matching what you want.
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Also try Brendan Biever at www.tubeworld.com or email him at tekman@tubeworld.com. Great inventory of all types of tubes - expensive, but honest and great quality tubes.
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I think you are better off paying a bit more on the expensive tubes from a reputable dealer who will stand behind his products.
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Good luck - you are going to have some fun.
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