I was looking at purchasing one of these two mowers. The 22156 is the light duty toro commercial with the honda gsv engine and the 22197 is the non-BBC heavy duty toro 21" with the Kawasaki engine. In the spring, we tend to get thick, wet grass to deal with so I was looking at something that bags well and then mulches find in the summer. We also have to deal with bagging leaves in the fall. I kind of like the 22156 because it's lighter and can side-discharge but the mower's transmission and slower speed (3.1 mph vs 4.2 mph for the 22197) is worrisome. Price difference is about $200 more for the 22197. Any feedback on either machine would be greatly appreciated. Thank you in advance.