Well, I was thinking up to two months downtime, with some cleaning to start up again. I had read here and elsewhere that the old 7900/9900s would clog easily, and fatally, from low use. I worked with them a lot over about ten years in a production environment, and they were great, pumping out stuff every work day, but, this will be for personal use, and I travel. My P800 can handle that level of sporadic use.
It's kind of striking how much cheaper the P6000 is to the smaller P800 at retail these days. Go figure.