Interesting review of the Motion by Real Watersports. He prefers the Motion over the Drive.
I (1,79m, 73 kg) have ridden the 2016 and 2017 Monarch (41 wide) and I ride the 2018 Motion (41 wide) right now. I also have a 2015 Monk (40 wide).
The Monarch is a great board but you have to put more physical energy into it, especially in choppy conditions and when you get overpowered. The Motion is easier to ride. I ride this with 11m down to 5m. No issues with going upwind or edging.
Edging from my point of view is more of technique thing (stance, weight distribution, leaning back, etc.)
The Monk is also a great board, more flex than the Motion (especially at the tips). A different ride, but very nice especially in high winds.