I have the HP Z3100, and I have have few problems with it in the 7 years I have owned it. I received an email from HP in January saying that they will not service the printer after December 31, 2014, and that I could not purchase a care pack for it after December 31, 2013. I had called them in December 2013 to extend my care pack, but was told that I could no longer purchase one for my model.
Anyway, I expect to purchase another large format printer in the next year or so, but I guess I'm going to have to go with Epson or Canon. I'm going to miss my Z3100 when it is gone.
I've attached a copy of the brochure that HP emailed to me that lists all of the printer models that will no longer be serviced. I do not see the Z3200 on the list.