I'm a huge fan of the 6X42 Leupold. Most of my big game rifles wear them. But, frankly, I believe you'd be much better served with an FXII, 4X.
While I do hunt some heavy cover with mine and I've made running shots at 20-25 yds. with mine, I still think you'd be better off with the 4X.
At 100 yds. or more, being able to see detail, like twigs and leaves in the way of your shot, does give the 6X42 an edge. But you said you've never shot anything over 80 yds., so....
The only place where they would work better than a 4X that I've seen, and I've got lots of time with 4X scopes too, would be on a dark night. A 6X42 shoyuld allow you to see about 50% further than you can see with a 4X33. E