6thtexas. I have purchased an 1858 Uberti from Taylor's and an 1861 Pietta from Traditions. I have had no trouble with either. I can't even say that one is more mechanically sound or finished better than the other. The only minor difference to me between the two is the packaging in which you receive them. As mentioned earlier by #blackpowderbill , Taylor's gives you a nice glove/pouch with their revolvers. Personally, the traditions Pietta was finished very nice in my opinion but we all know what they say about opinions.
I cannot speak of Cimarron but I understand they are often touted as having superb quality. Thanks