If depreciation is part of the value equation, then the Uggie in any gauge but 12 would get my vote. I bought a new Lion Country grade 1 in 16, and it was a fantastic gun. Light, thin barrels, no unsightly choke bulges, 6.25 lbs, nice wood, great case color, etc. I have never owned a Baikal or CZ, but to be brutally honest, I've seen fence posts with nicer wood. The S&W doesn't have a track record (and their falling prices aren't a good sign either), so if buying new, I would stick with the Uggie.
All that said, I sold the Uggie to buy a 100 yr old used gun.