I’ve worked with an Epson 2200, 3800 and 7900, and I’ve had a P800 for about a week. I can’t comment on the Canon Pro 1000 as I’ve never been in the same room with one.
As with yours, my 3800 is working well after what must be 8 years. I made 6 prints this morning, all on Hot Press Natural, and they look great. I love the ease of loading thick paper in the back, and the sheet feed has always worked well. The front door latch broke early on and so I’ve been taping it shut all these years, but that only adds to its charm.
The 7900 yielded prints for two exhibitions. It always felt solid and professional. But the first head went after about 6 months (replaced under warranty at no cost to me) and the second head is going now, 4 years later (at least I think it’s the head, but maybe it’s just the dampers). Epson will fix it for an estimated $2000.00. Rather than accepting that offer, I’m giving it to the first person who shows up with $300.00 for the carts (but they have to take the printer too. Manhattan, ground floor, printer will fit out the window. PM me).
The P800 makes great prints, but I find it clanky and plasticy and, as with unesco above, I’m having a difficult time adjusting to the front sheet feeder. Why did they change from the rear-feed system on the 3800? I purchased the P800 over the Canon Pro 1000 only because it’s much lighter and I have to carry my 17" printer with me to summer venues. Also, I was thinking of adding the roll adapter and sticking with 17" prints for a while but, given that the P800 feels at bit flimsy to me, I think that I’ll instead purchase the Canon Pro 2000 ($300 rebate until the end of March) and use that as a 24", roll-paper, non-peripatetic workhorse.