It's hard to choose......I have originals and repros of both.
The Enfields are beautiful rifles, and great shooters. I like the Enfield sights better. If you add in the 1855 Springfield with the ladder sight, it's a toss up. I was never a huge fan of the leaf sights of the Springfield although they do work.
The Springfields, in my opinion, are really good looking rifles but so are the Enfields. I like the Armory Bright steel but if you want, you can polish up an Enfield.
The Enfields feel a little more reliable. Maybe it's just me. I just fired 40 rounds with 0 misfires through the Musketoon. I recall my ArmiSport CS Richmond being kinda finicky the last time out. A few misfires.
Both of them are iconic and are historically important.