Tube Pre Amp replacement for Manley Shrimp.

I'm looking for some recommendations on an upgrade to my existing pre amp. I'm currently using a Manley Shrimp and have been very happy with it up to now (great PRAT and sound stage with the right tubes). I'm currently looking for a unit that offers remote volume control and doesn't require more than 6 tubes (to keep tube rolling more cost effective). I've used a lot of different pre's in the past - Sonic Frontiers, Bryston, McCormack, and Manley - and would like some recommendations on other manufacturers. I'm a big fan of tube "warmth" and tend to lean towards the Mullard type "sound". My current gear behind the Shrimp is a Bryston 4B ST, Classe CDP 10, KEF 104/2, Harmonic Tech Pro-Silway III+ interconnects, and Harmonic Tech Pro9+ speaker cables. I'm looking to spend between $2-3 used. Would be very interested in any feedback on pairing the Bryston with an AR, Calypso, or DeHavilland.

As always - thanks for the help.

Clayeton