Either companies rifled muskets are pretty good but the thing you must ask yourself is whether you want to shoot Minie' style bullets or round balls.
These Rifled Muskets (all of them) were originally made to shoot the Minie' balls so they have just a few (usually 3) grooves and the grooves are usually rather shallow.
While this worked fine for killing people, where pinpoint accuracy wasn't needed, it does make getting really fine accuracy out of them a challenge.
The problem usually mentioned with these Rifled Muskets is they almost always have a heavy trigger pull.
The rear sight is usually a fairly wide V notch and the front sight is a narrow blade.
Combining these two features for one hole accuracy is not an easy job.
Although these guns will shoot a .570 roundball patched with a good cotton patch the combination must be fairly "tight".
If your shooting a Minie' Ball, the bullets hollow skirt pretty much limits the powder load to 70 grains (60 grains was the usual load of powder).
Adding more powder will often "blow the skirt" as it leaves the muzzle and this will create "flyers" that are totally unpredictable.
Some folks really dislike the Enfields stock. The comb is rather high and it can clobber you cheek.
Speaking of clobbering your cheek, when shooting a 400+ grain Minie' the recoil is very much like a 20 guage shotgun. The roundballs kick much less.
If you willing to live with these things I'm sure you will be happy with an Enfield from either of these companies.