I felt that the drive system, size and layout of the rotar was awesome! There are definitely problems with the slider engineering (round slider that was too small and can twist) and a limited size clamp system, etc. but nothing that wasn't fixable that could make a potentially wicked machine. And that was using a awash plate drive that worked incredibly well when it worked. I feel there is still a lot of potential for the rotar. And I'm really excited to see what the Vortek shapes up to be