I've had some issues with my MEC but they have been with the reloader, not the Automate. The electric drive unit has been trouble free for the 3 years I have had the machine. I bought it used as a complete unit. I totally recomment the Automate drive.
I have had mine now for 2 years and never thought about going back. Started out with the 9000g then added the automate. Took me about 3 hours to disassemble the handle and some linkages, clean, then assemble the automate. Some buddies of mine suggested the mock mate for foot control to increase my speed. But I was more interested in quality and not so much on quantity. Plus using the two buttons it keeps your hands out of the way of moving parts. Either way I am sure that you will enjoy using it.