Well I demoed both the Toro and the Exmark. Both of them had tracking problems. Not a major issue but neither went straight. So, since it was sitting there, I demoed a Scag Vride, WOW! That's a nice machine. I didn't cut grass with any of these machines, but the Scag felt much nicer from a controllability standpoint. More comfortable too. More money though.
This mower shopping is tough!
Most of my equipment is Exmark and Toro (several WB's and smaller 21" mowers). I haven't run any Scag equipment so I don't know much about them. I imagine they make good equipment.