Hi, does anyone have experience with the xerox proficio px500? I currently have a versant 4100 and am considering a change. I am looking at the Ricoh c7500 or the xerox proficio px500. I have been with xerox for 18 years, the service is okay but the business practices and poor quality of parts discourage me from continuing with them. I would appreciate any experience with the Ricoh c7500 or the xerox proficio px500. Thank you