We purchased one 2 years ago. We checked the accuracy of the travel using a dial indicator mounted on a plate. We ran the machine from home position (full stroke) in X and Y. The machine repeated to within .002 inches full stroke.The benefit of the timing belt is that it is immune to dirt (unlike rack & pinion). This matters in a fabrication environment. Some people claim that the belt strtches, but it's steel reinforced.
To say the least, we are totally satidfied with the performance of the machine. Keep in mind that a plasma system has 2 parts: the table & the plasma cutter. The quality of the cut is largely dependant on the plasma cutter.
Feel fre to call me: talk to Fastcut and ask them for the number for NRC in Ottawa.