Rigidty of unit

I had a CNC Shark from New Wave Automation, that was several years ago. I used it for several years and found it to be very steady when making a rough cut on deep cuts. The time of cuts were long but clean.
My question is I am looking at the XCarve to back into CNC woodworking, how can I rate this machine to Shark. My concern is cut times………….
Russell Boisvert