pwillie, loading and shooting is just half the story....how about cleaning?
Now this is where different guns show their difference.
Muzzleloaders are best cleaned with water and water based solutions and this must be completely removed for corrosion free storage.
My most prized ML is a flintlock that the barrel is difficult to separate from the beautiful stock causing me to worry about moisture left between stock, barrel and action. Not an easy task.
Some sidelocks have what is called a "hooked breech" that allows for easy separation of barrel and wood. A lot easier but you can't remove the breechplug for cleaning and inspection.
Most if not all modern inlines have removable breech plugs that make straight through cleaning and inspection even easier. The only down side to this is that special attention must be payed to the breech plug to make sure that it is cleaned and antisiezed.
Although I prefer sidelocks the best configuration is the break action inline because you can easily separate the barrel from the action and clean separately.
IMHO, although I don't own one and they are not cheap, the "Redemption" appears to be the easiest muzzleloader to load, shoot, and clean and will be my next rifle buy.
You asked me what time it is and I told you how to build a watch.