You will NEVER regret a Ruger single action purchase!! Nothing else on the market compairs in terms of reliablity and customer service. I have Vaqueros in 45 colt... consecutive serial numbers from the factory... 40th birthday gift from my beautiful wife!!
If your considering a Ruger single action... Why not a convertable??? http://www.ruger.com/products/newModelBlackhawkConvertible/models.html
Uberti and Cimarron both make "cowboy" guns in .357. I own both, plus Ruger. Like them all. Ruger is heaver and stronger, but the other two are more historically accurate. The Blackhawk has adjustable sights the other two fixed.
The great questions of the day will not be settled by means of speeches and majority decisions but by iron and blood.