I think I'll probably have to wait awhile. I'd get the new Marlin 1894FG that's coming out. It's in .41Magnum, of course, to compliment the rest of my collection. If not that, then the new Ruger #1-H in .405Winchester. RKBA!
I would be standing over the Colt "Snake Gun" section ... probably drooling all over the counter. Want a good old one (LNIB) really, really badly right now.
The Colt 1911A1 limited edition recreations have my fancy too!
If I had a lot of money - Colt SAA
If I had under $500 - LNIB S&W Model 27 or 25-5 w/ 6", 6.5" or 8 3/8" barrell.
If I had under $300, a used but good condition S&W 586 w/ 6" barrell.