I think Extruded Aluminium is probably a lot tougher than box, channel, or angle.....but for our purposes i think they are both equally strong enough if used right......
But this year with the hints of needing robust robots and bumpers u may want to use more extruded aluminium over the box, angle, or channel aluminium.
(Maybe Andy can add more....he uses it at work and knows the stuff really well)
