Thanks all for your great suggestions: I have tentatively narrowed it down to two:
1. The Aric Unlimited suggested by Kalali and David Ten. I like the fact that it is a ’pure’ tube solution. Plus, I like the look of units with their Tubes Sticking Out. Kalali, I notice from another thread on this site that yo have been enjoying this unit for a few months now. Impressions? I am particularly interested in your evaluation of the noise floor. Have you experimented with rolling tubes yet? David, I would ask you the same questions, presuming you own one. Thanks to both of you.
2. c_s: I am leaning toward your Modwright. Although it is not a pure tube setup, I read the 6 Moons and Enjoy the Music reviews and was impressed. It is rare that reviewers pan units, but they sometimes ’damn with faint praise’ as my father used to say. Not so with these reviews, and the characteristics they described were by and large those I am looking for. I also like that it appears to have an Alps or Alps-like motorized volume control as well as a torroidal power supply. I am aware that I need to decide soon if I want the Modwright. I do not expect it to last long at that price
gsselling: I did look into the Schiit. Very nice price. I noticed that people complained about the noise floor, though the tubes you suggest appear to solve that issue. Thanks for the suggestion.