Don't own any myself (so please take the following with that in mind), but from what I have read and, as all are made by Uberti, the three seem very similar; ready to shoot competition guns with some different cosmetic touches.
The Cimarron is supposedly tuned by their gunsmith:
"The Evil Roy version of the Cimarron Model ‘P’ features a wide square notch rear and wide constant width front sight, slim grips hand checkered European walnut, an action tuned in the U.S. by a skilled gunsmith complete with lightened trigger and hammer springs, no creep trigger pull, and improved internals for reliability." (also see
this)
Uberti says the same about the El Patron:
"You can depend on it! Lightning fast and reliable, shot after shot—in the world of single action revolvers Uberti's new hand-tuned Cattleman model is truly “the boss,” or El Patrón, as the Vaqueros of the old west would say. The gunsmiths at Uberti have fitted each El Patrón with high-grade, US-manufactured Wolff springs and each revolver has been carefully tested and certified for flawless fit and function. The result is a single-action that is reliable, lighter and faster with a smooth-tuned action."
Taylor states that their deluxe Smokewagon has additional tuning:
"The deluxe edition model also includes custom tuning; custom hammer and base pin springs; trigger-spring at three pounds; jig-cut, positive angles on all triggers and sears for crisp, reliable action; a coil-loaded hand; and wire bolt and trigger springs." This additonal tuning gets some favorable nods over at
CASCity.
You might also want to look at a
tuned USFA Rodeo.
As a fun gun, all three (or four with the USFA) would probably serve just as well in their, shall we say, "stock" (less expensive) form. I think a Ruger should be considered here as well. Here's an interesting read:
http://www.thehighroad.org/showthread.php?t=465261
Regards,
Greg