There's nothing wrong with the scope you have and it guaranteed for life. Personally I don't like dedicated muzzleloader scopes and especially when they offer a multi-reticle. However, it is good marketing and they're making TONS of money on them. Multi-reticle scopes are unnecessary IMO. A quality scope on an accurate rifle still means plenty of practice at intended ranges.
I had my choice and checked out both the Leupolds and Nikon scopes. I settled on the Nikon Monarch 2.5-10x50 and was so happy with it, I bought another.