campuscab: This article has pretty brief but helpful reviews on 9 hard dinghies that handle row, sail, or motor:
Tenders: Making the Hard Choice | Cruising World
I have the Dyer Midget. It's fun to sail and rows nicely. It can motor too (I've put my 2hp Honda on it), though the rudder gungeons prevent me from mounting the motor on the centerline. Since it rows so nicely I don't see much reason to motor with it.