My company is considering purchasing a Canon ImagePress (C850 or 10000). The prints the salesman brings look awesomely beautiful. I'm wondering if the quality from the machine will hold up over time. Also, are the ImagePress machines reliable or can I expect regular downtime for service? We are a printing company that currently runs two HP 7800 presses and are looking for a lower-priced alternative to offer. Any feedback on the ImagePress machines would be appreciated.