Upscale audio advice


I have been looking to change the tubes on my BAT VK-30 from the Russian made 6922/6h23 which work fine but am looking into upgrading them. I looked at the Upscale selection and a few options initially caught my eye. These are as follows:
1)Amperex 7308 vintage gold pin
2)Amperex 6DJ8/ECC88 Bugle Boy
3)Ediswan CV2492/6922
4)Mullard 2493/6922 & Mullard E188CC/7308

All of which, if I choose their Platinum grade, range from $70 to $110.00 each which seemed pretty reasonable to me. The problem is, their sales guys tells me that none of these are suitable for my Pre-amp. He goes on to tell me that the only units that will work are the very same 6H23's that I already have. Is this sound advice from them given the fact that I would like to spend some decent coin to upgrade or do they not wish to deal with me? I have seen in other forums that they tend to want to sell to customers who have purchased equipment from them. Is this true? I do want to change my tubes given the fact that they are about 5 yrs old and definately are due for a change. I find it hard to believe that the only option they have that will work with my VK-30 would be these cheaper $35.00 per tube units. Any further comments anybody may want to add to this or advice you may have for me?
vinylmad814
Viktor may have been hesitant to recommend any certain tube, because you may not appreciate the difference in presentation. All of the tubes that you referred to, are direct replacements for the Russian 6H23, as they are all iterations of the the 6DJ8/6922. The tubes mentioned will all provide a warmer presentation than the Russians did, when new, with a better sense of venue ambience & sound stage(if your amps/cables/speakers/room are up to it). The only currently manufactured 6922s that can compare(in sound quality) to NOS 6922, are the EATs(high dollar)(http://www.musicdirect.com/p-5315-eat-cool-valve-ecc-88-aka-6922.aspx). They, NOS Telefunkens and Siemens(E88CC/E188CC/CCa)ie: (http://www.tubedepot.com/nos-7308-siemens.html) will provide a more neutral(less warm than those you asked about) sound, still with better ambience/staging. Anyone that tells you that NOS tubes don't sound any better than the common, presently manufactured 6DJ8/6922, is either deaf or simply knows not of what they speak. DO be certain to purchase tubes that are graded for preamp/phono stage use(the way Kevin does).
Hello Djohnson54

Which tubes did you end up purchasing from Upscale audio? I am curious. I certainly got the feeling that the Inside guy was adamant about the majority of what they stocked was incompatable with the VK-30 not the VK-30SE. Much to my dismay, he clearly stated that the 6922-6H23's which I have already were the only ones that they would recommend and that would work properly. Go figure :(. I heard that the Genalox Gold Lions would work and that they would be definately an upgrade over the 6H23's. Who Knows lol
Oh,
Thank you for all of your responses. If you have anything further to add please do so!!!!
I have been buying from Kevin, the owner of Upscale Audio, for 15 years and he has always given me sound advise. He is one of the most knowledable tube guys in the business. If you were not talking with Kevin, perhaps putting in a call specifically to him would help clarify the issues you are trying to sort out. Upscale does have a policy of selling certain select tubes to customers who have purchased their tube equipment from them. However, they also have a large selection of tubes available to anyone.
I'm using Genalex Gold Lion 6922 reissues in my 3iX. Pricey for a current production tube, but they have very nice "tone". I've tried some orange globe Amperex 6DJ8s, but otherwise haven't experimented much with NOS tubes in this pre-amp.