Although this is a great site to ask these questions about support, it really only helps if you get answers from people in the same area as you.
Some of the questions that you can ask each dealer is...
How long is training and installation?
How long does it take for you to come out after my initial call with a problem?
How many technicians do you have in my area, and how large is their territory?
If I let go of my designer and need someone to be trained again on the machine will you charge me to come back out and train them?
I could give you some information on this machine as well as others if you are still in the decision making process, but I would need to be contacted directly. Please email me if you are interested!
Good Luck