Gosh, I'm blushing. Thanks for kind words Steve!
I would say that there are really three basic paths to take.
The simplest is get an Otari MX-5050BII, Technics RS1520 or other "prosumer" level machine, leave it stock and make sure it runs as well as possible. A B67 might fall into this category along with the A77/B77/PR99. From what I have seen I would lean toward the Japanese machines over the Revoxes.
The next step would be generally to do what Steve has done, with a medium priced deck modded to use outboard electronics. The deck could be a Technics, Otari, Tascam, a broadcast level Studer like an A807 or A810, maybe a Revox B67, B77 or PR99, etc. You could use our Tube Repro like Steve has, and for less dough the Seduction is a step up from stock too. A little known fact is that the Magico room that got best of show from the folks at TAS at CES 2007 had a Seduction kit, not a Repro. At this level you want to choose a deck strictly for it's mechanical transport, as that is all you will use, and it accounts for about 50% of the sonic character of a tape playback system.
I think that if you are going to go beyond that it's probably time to bite the bullet and go for a full on studio machine with good electronics - basically an ATR100 from Mike Spitz or a better Studer (A80, A820) gone through by John French with the best electronics you can get - Aria, EAR, or maybe our Repro. This will cost a pretty big chunk of money, but it will be money very well spent.