In short, I think it's just about impossible to screw up with a Benji 392. They're hellbent for stout, lightweight, accurate, and common as dirt for replacement/ spare parts. The Peep sights make it quite a bit nicer, although I still don't know of an effective scope mount to put on them. I'm not a lover of scopes on them anyways, so it's not a big issue to me...
They're just fine in factory issue (although the trigger can sometimes be awful) in that case Airguns of Arizona sells a super sear to alleviate the issue, and has excellent instructions for installation.
http://www.airgunsofarizona.com/CustomParts.htm
If you want more power out of one, you can get the steroid treatment from mac-1, and get around 900 FPS out of it. As I recall, you can get one treated, tuned up, and ready to go for $250-$300
http://www.mac1airgun.com/
If you don't like pumping, and are happy with factory velocity there'sa real nice looking ACP option available at Airguns of Arizona. (cuts pumping in half)
http://www.airgunsofarizona.com/
It's listed individually on the scrollchart to your left, a little hard to find, but pretty neat.
I know it's not neat, novel, or very interesting, but to me it's a very tried and true option.