What Dick2 said. Like most machines designed to do multiple things, it does them all adequately but none of them really well.
I have a Mark 5, and while I was on active duty in the Navy and severely restricted on space, it was just the ticket.
Now that I have a little more room, it's been pretty much replaced with a real table saw and a sliding compound miter saw.
I do still use the disc sander and bandsaw functions, and have the lathe tools around if I need them.