I think Cimarron has the most SAA variants and the most emphasis on authenticity. Their charcoal blue is beautiful but will show wear from a hard look. They also have standard blue/ch, nickel, and the "run hard, put up wet" Original finish where they wear a perfectly good new gun down to about the 10% level. My Cimarron is an older ASM gun, they are now selling Ubertis.
The EMF Hartford Premier has the best looking blue/ch finish of any clone I have seen. Hartfords are available with basepin screw (blackpowder) frame. They are Ubertis, too.
I don't know much about Navy Arms or Uberti USA and can't say if all Ubertis are equal, or whether Taylor or Traditions are handling a full line of SAAs. Uberti is now owned by Beretta, but I have never heard whether they made any changes in plant, people, or operations.
Shop around and you can probably get a pair of one or the other for $1000.
COWS bought out Armi San Marco to bring out the AWA line of SAA clones and quit selling guns to other importers. They have sold a lot of guns to SASS members who either love or hate them.