I've never owned anything but Bushnells, so I can't comment on the others. But, I have gobs of firsthand experience with Bushnells, so here's my $0.02 CDN funds.
If you're thinking about a Banner, have a long hard look at a Bushnell Sportsman scope. The Sportsman is a much tougher construction (look at the lack of exposed plastic, as compared to a Banner), and I can't really tell much/any differennce in optic quality between a Banner and a Sportsman. Nothing wrong with the banner mind you (I have a Banner 3.5-10x - works great, no complaints at all), but I think the Sportsman is a tougher scope for less money - and "tough" is a consideration for a hunting gun. I've had (or still have) 3 of the Sportsman 3-9's, and I have pounded the heck out of them - the two from hunting rifles have dents and scratches all over them now, and the thrd is on my high power spring-air rifle (a type of gun notorious for eating scopes), and never had a problem with any of them.
Just food for thought. I think if anything, the Sportsman has a bigger occular bell than the Banner, so that might be a downside to think about.
I too have heard very good things about the Muellers, and someday when I've got the spare money to try one, I intend to.