I know this is gonna sound like heresy to some, but I stuck a 2X BSA pistol scope on a Marlin 44, and I LOVE it. Fast to acquire, especially with both eyes open, and I can still shoot groups and test loads with it if I'm patient. I never heard much good about BSA scopes, but I'm convinced that the fixed power jobs are a good deal. Mine has put up with about 2,500 medium-to-full power 44 mag loads, and hasn't moved a hair. I have another on a Ruger Redhawk 44, and the story's the same. I expected both of them to toss their guts after a hundred rounds or so, but that hasn't been the case.
And did I mention the price? I got the first one for $40, the second one was on sale for $30. It doesn't get any cheaper than that. I like a little more magnification, but I do most of my shooting at 50 yards, and these work just fine. If you want to shoot a lot at a longer distance, I'd snag a 4X and never look back. My 35 Remington wears a 4X Simmons that I paid a hundred bucks for about six years ago, and it has also served me faithfully. Sometimes you get MORE than your money's worth. Thus far, I have.
Papajohn