Having only four cap'n'balls, I barely qualify to reply. I've got a Uberti Augusta (1851Colt Navy brasser w/ octagonal barrel), an ASP Beals Remmie (see my avatar), and two Pietta 1862 Police (short '61 Navys with unhistorical fluted barrels, or '62 Polices with unhistorical fluted barrels and 6 shots instead of 5, depending on how you look at them).
The only thing I don't like about the Augusta is that it takes .380 round ball. .375 is available locally without mail order or casting myself.
By looks, the ASP should be my favorite. Big, functional, a good shooter, and a good looker. Engraved, sort of. A real gunfigher's gun.
But the favorites are the Pietta '62s. Six shots let's 'em work for CAS, they're short enough to be relatively fast on the draw, and they're good shooters. Even if they are "fantasy" and with the infamous Pietta tail. ...And they take .375's I can get locally. Reliable guns - as long as you've got your cones and caps sorted out.
If I had money for another dozen guns or so, I'd bet I'd fall in line with the historical '61 Navy crowd. Even if my name is "Octagonal Barrel."