Spade, I've got experience with every Nerf gun made right now, so I might be able to help.
I've got a spectre and I've been quite impressed with it's performance right out of the box. It's a bit longer than the Mav, but it's much thinner. Definetly worth giving a look. Plus it doesn't encapsulate the tips of the darts, so there's less chance of them wedging in the barrel if they're slightly out of whack.
If you're planning on attending the 'tavern night' in july let me know beforehand and I'll bring the arsenal. (is it bad when your nerf guns require a duffle bag that's big enough to hold a body?)