Colt's inexpensive single action, the Cowboy, really sucked. It had an OK finish, but was fitted poorly and the action was rough as a cob. The trigger pull was about 8 pounds. I ditched it a few months after buying it to someone who just had to have a Colt.
I have been very happy with Uberti's guns. The are fit much better than the cheap Colt. The action and trigger is much better also. The triggers on the ones I have fired are generally better than the triggers on Colt's SAA even.
As far as Ruger Vaquero's are concerned, get one if you want one, they are well made, but they are not SAA replicas. If you want a faithful reproduction of the Model P, this needs to be last on your list.