Looking for a new tube preamp


Currently using a Cary AES DJH preamp with various 6SN7 tubes & NOS EZ81 rectifier. This is an excellent sounding preamp with point-to-point wiring. Looking to upgrade. Would prefer very realistic uncolored preamp, even better than what I have. What can you suggest? Running a McCormack DNA-1, driving Von Schweikert 4.5 speakers. Silver interconnects and speaker wires, multiple turntables and CD/SACD player. I've read some good things about the Shindo Aurieges. Not sure if its output impedence is a good match for the McCormack. Also thought about Modwright. Upper spending limit is under $4k new.
tube540
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From SAS website:

•Changes in amplifier input impedance, 20k ohms to 100k ohms, will change the tonal balance, especially in the bass/mid range. The 11A has an adjustment to compensate for changes in amplifier input impedance. No other manufacturer that we know of has this feature.
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Thanks to everyone for your suggestions. I like the idea of staying with 6SN7 tubes, as it has been difficult to find the smaller 6922/etc. tubes in NOS that are quiet to start with and stay quiet. The 6SN7 tube is just a lot better from the get go in my opinion. As a result, I will look into the DeHavilland Ultra Verve and Ultra Verve Jr. and see if I can pick up a used one. But I'm not ruling out the Shindo Aurieges.