Mid-Missouri is now called Big Muddy in case you're looking for new ones.
I had a Fender octave mando for a while, I actually bought it to play one gig and then unloaded it shortly thereafter. Octave is a lot of fun to play (even on that Fender POS), it's like playing a guitar but you get that cool mandolin sound.
Anyone played a mandocello? Those are some sexy beasts.
Right now I've got an absolute crap Dean A-style with a big honking single coil pickup in the middle of it. I've been lusting after some of the Michael Kelly's we've got at work - I'm thinking about an oval hole, they've got such a nice round sound.

I played an awesome Eastman oval hole F-style once and fell in love.