I've got one with a few barrels. Very accurate (sub-MOA) in .22-250 and .375H&H, not so good with the .25-06 (nothing better than 2 inches, but I'm still playing around with loads), 2 inches with the .50 muzzleloader barrel, and absolute crap with the rifled slug 12-gauge barrel. It's a cool toy, decent trigger out of the box, nice wood, unique looks. The option of buying a new barrel without any paperwork hassles, and thereby winding up with what is essentially a new gun, is nice. Scope mounting can have slight complications related to the interference of scope eyepiece bell with the hammer. Hammer extensions work with some barrels, but cause misfires with others of mine. All of the new Pro-Hunter barrels and stocks work with the older Encores.
There are lots of aftermarket pieces, barrels, and customizers to be found on the Net. Look up Mike Belm.
I'm keeping mine, and plan on getting and playing with more barrels in the future.
John