Is there a gap you want to fill? You could look at a gun for a slightly different purpose, like a T/C Renegade sidelock or an Omega X7 (peep sights).

The Long Range Hunter or a Disc Elite would undoubtedly be a fine choice if you want to stick with the scoped inline route. Fine guns.

When buying a used ML, due to the corrosive nature of the powders the primary concern is how good of care they took of the barrel. Do yourself a favor and invest in a cheap bore light. I would never buy a used ML without dropping a bore light down the barrel, I've just heard too many stories of people getting used ones on gunbroker etc that looked pristine on the outside yet when they received the gun the barrel was rusted and pitted out inside.

MTA: Welcome to the addiction. You are kidding yourself if you think you'll stop at "just one more." I'm sure Cayugad thought that once too.