I guess the biggest question is are you looking for a muzzleloader to have the primitive hunt experience with (flint or cap lock), or one so you can have a legal single shot rifle in shotgun zones (modern in line style)?
Assuming your looking for the latter, last winter I bought a CVA Accura MR and played around with it over the summer some and used it for about half the WI rifle season (didn’t matter what I took out as I didn’t see squat). Easy to load, sharp trigger, more kick than my TC cap lock but still no where near my 20 ga. shotgun or .270 rifle, accurate (I’ve only shot it up to 75 yards so far though). Its actually a bigger pain to clean than my cap lock (more parts), but the removable breech (that does come out by hand turning) makes it easier to get into the nooks and cranny’s. I got some foaming bore cleaner and that made cleaning a lot easier.
The gun itself is a composite stock with some rubber grip pads on the pistol grip and forearm which give a really firm hold to the gun. Barrel is stainless with some kind of weather shield coating, haven’t had it long enough and shot and cleaned it enough to have a feel on the coatings durability.
Biggest thing with muzzle loaders, clean clean clean, and do it right after shooting. Black powder is really corrosive stuff. Also, don’t feel like you need to max out the load for every bullet style you try. I’ve played around with many different bullets between my two muzzleloaders and just about every one of them the max charge is too much in my opinion and throws off your accuracy (this is loose powder, never tried pellets). Backed it down in 10 gr increments till the patterns straightened out and I’ve gotten much better accuracy and save on powder (less fouling in the barrel too). In most cases I’m only backing off 10 or 20 gr to get there, so not really loosing that much speed anyway. I don’t do much long range stuff so I can’t speak to the performance affect out at 150+ yards, but I do know a 50 cal. round ball with only 50gr of powder behind it will make a complete pass through at 40 yards. Put 70 gr. behind that same bullet and your pattern is all over the map (this in a TC hawken).