For the your money, the number one consideration should be one of support. Find a local distributor with a long history with the line. That distributor should be very happy and comfortable taking you to a local user or two that could tell you about their likes and dislikes with both the machine and the distibutor. After that, consider the availablity of parts and service. If you have the best machine in the world but cannot get a $600. part for a week or two then a savings of $10K on the selling price evaportes painfully quick. After that it boils down to personal preference, what type of control do you like, is the tool layout cofortable, does it do "a little more" than I need ect, ect.