RUGER!
Colt thinks very highly of their guns and prices them accordingly. Pick up any one of the extensive line up of Ruger single actions and you won't be disappointed. I have a Blackhawk in 357 that is a hoot, but if you need fixed sights for your event they make the Vaquero.
The plus side to buying a Blackhawk over a Vaquero is that you get the ability to shoot those hot as heck Ruger only loads
