I've been riding a Hyperlite Shim for 2 seasons now and can't say enough about it for an "off the shelf" in-between-er board. It's a little too fast for most to learn on, but once someone new has gotten in the pocket a few times, I can generally get them comfortable on the Shim. I'm 6'4" and 260lb, so I'm used to having undersized boards - even with the biggest options out there. I ride the bigger (5'4") Shim a little further forward than most.
Korey Morris -
Sold to Arkansas: 1986 Supra Saltare
Current: 2018 Moomba Craz