Well let me throw .327 Fed mag out there. I think the only revolver doing it justice right now is Ruger's New Model Blackhawk with the 5.5" barrel and 8 rounds though.
I don't think S&W is doing much with the .327 Fed mag right now though. They have a couple 2-3" revolvers with 6 round capacities in their 632 Pro Series.
Personally, I'd like a S&W Model 60 with 5" barrel chambered for .327 Fed mag. Get 6, maybe 7 rounds and I'd be happy.
Course, .327 Fed mag hasn't quite caught on yet. Performed great on black bears and deer up here though. And if you reload you might like the ability to shoot .32 H&R mag, .32 S&W long, and .32 S&W out of it too.
Still, .357 S&W mag/.38 S&W special and .44 Rem mag/.44 S&W special are the mainstays across the country.