The Remington is not really any more "robust" than the Colt, practically speaking. It just looks like it is.
Almost everyone gets the Remington, because it's a "superior design"... .or so they're told. In some ways it's better, in other ways, it ain't. Primarily, they don't suffer from the "cap sucking" problem that Colts can have (not always, but often enough). The exploded cap can stick in the safety pin notch in the hammer face and when you cock the hammer, it draws this bit of copper trash back and it can fall into the gun and really gum up the works. This isn't really a problem with the Colt design, but it's a problem with modern caps... which are way thinner than old caps. It didn't seem to be a big problem 120 years ago, but it can be today. The "fix" for this is a "cap rake", which I am now installing in my 1860. This is good old fashioned gunsmithery, so not for those who are not so inclined.
I will tell you that you definitely CAN have a cap jam with a Remington.. and it can be a b---- to fix. So they're not totally immune.
The place where the Colt is superior is the base pin. The Colt has a huge base pin with spiral grooves on it, and it laughs in the face of fouling. The Remington... well, it's a tiny pin that can lock up tight fairly quickly. You have to be more attentive and keep it clean and lubricated.
The other place where the Colt is generally considered superior is the handle. The Remington handle is awful. The Pietta is better than the Uberti, because the Uberti is closer to the original shape. Pietta attempted to fix it as best as they could. The Colt, of course... well, it's a Colt.
Personally, I hate the stubby Navy two finger grip. I MUST have the Army length handle. For the Colt, I think the Uberti is closer to the original shapes, and are much better than the Piettas, but the Piettas are OK.
Whatever you get, go ahead and spring for good cones/nipples. The stock nipples MAY be ok...but more likely they are kinda undersized (the Pietta 1860 I'm currently working on still has stock nipples at the moment. CCI #10 caps "fit", but are still too loose. I don't like my caps falling off!
I need to order TRESO nipples and CCI #11 or Remington #10 should fit well). Do not accept having to pinch caps! Get good nipples and the right caps to fit them.