There aren't many cons associate with the Model 65 at all. The only one is that a steady diet of FT&B (full tilt & boogie) .357 Mag. ammo can, eventually, cause cylinder endshake.
The pros are that it's a K-frame .357 Mag., one of the best combinations of power, ergonomics, weight, balance, etc., ever put into any revolver package.
The stainless will make it very corrosion resistant.
One thing that you'll probably want to get are some Kleenbore "Lead Away" cloths. These do a very good job of removing the carbon staining that you'll get around the rear of the barrel, front of the cylinder, and at the muzzle from the powder gas.
Do NOT use these cloths on a blued gun, though. They're mildly abrasive, and will damage the bluing. On stainless, though, they're fine.
Another pro about the S&W is that it can easily be given a really good trigger pull -- smooth & light -- by a competent gunsmith.