If you find the Ducati Monster 1200 a bit too monstrous and the Monster 795 too weak for your tastes then the Ducati Monster 821 is the friendly neighborhood monster for you. On the dimensions front, the Ducati Monster 821 is identical to the Monster 1200. The only visual differences are the double-sided swingarm, which the Ducati Monster 821 gets to keep cost low, and a differently-shaped exhaust.
The Ducati Monster 821 is powered by a tweaked version of the Ducati Hypoermotard's 821cc engine, which makes slightly more power at 11 horsepower and 89Nm of torque. There is also a lot of hand-me-down tech from the Monster 1200. This includes an eight-level traction control system, ABS and ride-by-wire throttle, both with three selectable modes accessible via Ducati's user-friendly toggle switch. Keeping shorter riders in mind, Ducati has also included a seat height adjuster, so the shorter ones can plant their legs firmly on the ground, on approaching a stop. I'm eager to try the Ducati Monster 812 myself, but we probably have to wait for that. But from experience with the Ducati Monster family, this may just prove to be the best Monster build.