Even with access to CNC machining and laser cutting I love the Vex VersaFrame/Chassis system.
We chose to use the Vex clamping bearing blocks over the traditional WCD blocks as we usually start work on the drive train before our robot is fully designed. This came in super handy in both 2014 and 2015 when we had to quickly enlarge the shaft clearance slot so we could tension the chain properly.
We even designed a
our own clamping style gearbox