Old Dog, If I were emBARKing (no pun intended
) on the quest you are, I would start with a Browning/Winchester (new made) in .25-06 and learn the idiosyncracies involved with two piece stocks, breech blocks instead of bolts, etc., etc., etc. Once I had really convinced myself that I had learned what I wanted and needed to know in order to make an informed decision and armed with the knowledge born of experience, I would then plunk down the several thousand hard earned dollars you mention to buy the ideal rifle that I now knew to ask for. From my current vantage point, I would probably end up with a Meacham or Ballard Rifle Co high-wall in some appropriate caliber (I still kinda like .25-35, but YMMV) or I would call Al Story in Oklahoma, I believe, and order one of his gorgeous Sharps Borchardt repros. But these are MY feelings developed from MY experiences and as with all such matters YMMVWidely!
One thing we should have mentioned from the get-go is that you should read everything you can get your hands on about single shot design, building, care, and feeding. I highly recommend "The Modern Schuetzen Rifle" by Dell and Schwartz and "The Breech Loading Single Shot Rifle" by Roberts and Waters. You also should go through (if not buy and outright devour) at least the first couple of James Grant's series, "The Single Shot Rifle," "More Single Shot Rifles," "Still More Single Shot Rifles," etc. and at least the first of Frank deHaas' books, "Single Shot Rifles." Much of what you read here we gleaned from these and similar sources, but just like reading the Bible and ending up a Baptist or a Presbyterian, your views will be based on your life experiences, personal views, and a strong shot of serendipity...heck, you might even find out you like something wierd like a Stevens! (Sorry, leadball! 8) )
Well, this rant has gone on long enough, but I hope you will enjoy and get something out of it, congratulations for finding "the one true way" of shooting, one shot at a time! 8)
Regards,
Froggie