Slightly confused – most half sheets are orbitals…. Orbitals don’t go round and round – it just describes the shape of the tiny ‘vibration’ motions. We’ve got Makita 9046s with a big 5mm orbit for removing material quickly and Makita BO4900s with a 2.5mm orbit which gives a better finish. Not sure if I would recommend as we have broken two drives between motor and pad in the last 12 months (4 machines) and the cost of repair from makita was about the same price as a new machine.
Personally wouldn’t go near the velcro backed tear off type sheet machines but that’s because of the the amount of use the department’s machines go through and how much cheaper rolls of glass paper are to bespoke pads.