You can' t go wrong with either. The Omega has some really neat features - and anything in the Knight line-up is top notch. I shoot a Knight USAK American Knight, their bottom line model...............but you' d never know it was " bottom line" by the way it shoots. The last time out, I cut a 3-shot group of .6" between centers at 75yds. It' s never failed me and never missed game in the field (knock on wood!).

A stainless barrel really is not necessary. You have to stay on top of cleaning on ANY BP gun, so going for stainless is really just a matter of personal preference and looks.

Also, I would definitely suggest going with a .50cal model, rather than the new .45s due to better component selection and ease of load workup..............I' m just not confident in most of the .45' s capabilities yet.

For a scope - you really don' t need anything monsterous. I use a 1.5X4.5 Bushnell shotgun Sportview Scope. It' s lasted for over 3yrs now & I' ve never had any problem with it - not bad for $60. And since muzzleloading tends to limit your maximum distance for shooting, up to 6X is really all you need and it' s nice to have a low power for those close-in shots we dream of.