There are lots of differences between the 12k machine and 70k+ machine.
Before considering the machine, you should define your requirements better.
Are you cutting 2 shifts per day, 5 days a week, with maximum output being the criteria? Is the operator going to be anyone who is hired off the street? Or is this in a protoytpe area where quick turnaround is important. Are you a small shop where the operator, programmer, maintenance guy are all the same person?
I am sure that both machines will cut your TREX product. The higher priced machines may cut it 2 to 3 times as fast. They have stronger drive motors and are more robust. Another benefit with a more commercial type machine is the multiple router heads/ drill heads. They are more versatile for production components.
Accuracy might be a factor, I'm not real familiar with the Shop Sabre, but check the specs on all machines for accuracy and repeatability.
A point to point router/drill might also work well on your TREX material. Used ones are available for around $30-40K  |