If you want advice on which you should buy, all you have to do is read what you wrote.

" The Winchester seems the best deal by far. The Omega would be my number one choice by far, however.
I want a muzzleloader that I can use for the rest of my life and be perfectly happy with. "

Don't you think that you should buy the one you want most if you're going to be using it for a long, long time? Why buy the best deal and always wish you had boughtyour number one choice instead?