I had a couple of Uberti 1858's a while back, but gave them to my son. However, I did do a little research.
@64Springer is right in that you can go blind reading all there is out there, but my guess is you're aware of this and asking for some suggestions to narrow it down.
Forget about brand names for a few minutes, and look at features. You can get these with brass frames or steel. I would get steel. It is more authentic and it wears better. Some of the Remington reproductions have cast steel frames and some are forged. I would go with a forged frame. I've heard of voids in the cast frames, for one thing.
Think about the finish you want. I don't like nickel or stainless, but that's my prejudice. Taylor's has 1858's with a modern matte-black finish which is not authentic but is said to be durable. I would consider one of these, but I prefer a more traditional blue.
I believe some of the Remingtons have a dovetailed (I.e. drift adjustable) front sight, although I'm not certain. This may be something to look for if you are a serious target shooter.
Those are just suggestions. I have no doubt you'll get a lot more. Good luck in your search!
Notchy Bob