Maybe I am in the minority, but I can confidently say that Vera Plus can handle far more devices. I have about 50 Zwave devices. 24 DSC Zones, Harmony, Onkyo, 6x Squeezeboxes, Ted5K, Rainforest Eagle, AltUI, DataMine, HUE/Echo bridge, etc, I run a couple of dozen PLEG conditions tracking many device states and timers and about 20 different scenes as well.
My vera+ has been pretty solid. The one thing I did which for me that was the most impactful in its stability was placing the vera on its own subnet/vlan . Once I did this, the number of unplanned LUUP restarts dropped to less than a couple per week.