I own two T/C Contenders with nine barrels, Two Encores with four barrels, One TCR with six barrels. I also own six H&Rs, four with multiple barrels.
Now for my opinion:
The contenders I love them, but they are all low pressure cartridges. The Encores, make great muzzleloaders. As for shooting metallic cartridges, they are a piece of crap. Accuracy is the pits, they will not shoot over three hundred yards well enough to hit anything. The TCR, is my pride and joy. It is a true long range shooter. Lock up is tight, opening is smooth, and quite. Set trigger is so smooth and light it is fantastic. changing barrels is quick and easy. The heavy magnum calibers are not too bad on recoil either, but the 3 1/2" 12 ga is brutal. The only thing I don't like about the TCR is that it has extractors, and is hammerless.
The H&Rs are my carry guns when I go into the woods. They take a beating and keep on shooting. As for accuracy, I regularly shoot at ranges of 300, 400, and 500 yards. I usually use a 30-06 for most of my shooting, but sometimes use a 22-250, or a .223. For bears over bait the .35 Whelen and the 45-70 are awesome. They put bears down right now. I teach shooting to kids in a 4-H program. I often use the H&Rs in the class room and on the range due to their simplicity. I consider them rugged and reliable.
I live in Alaska, I hunt dangerous game, I carry H&Rs, and the TCR. The Encore stays home. I only carry Single shots.