Also, do you need roll handling or are you just thinking you might. I got my 3880 a few months ago. I didn't want to handle a lot of rolls. One reason is because my work area is in a small spare bedroom. I didn't want to store and handle a lot of rolls. I can print 16 x 24 on 17 x 25 cut sheets. If I ever need to go larger, I will send it out until it becomes common enough to look at a bigger printer.
One thing that concerned me was that I couldn't find 17 x 25 cut sheets of canvas. I really didn't want 17 x 22, so I bought a 17" roll of canvas and cut it to length with a razor and straight edge. The sheets came out flat even at the end of the roll, and I have had no problem feeding them. This would be a pain if I were doing a lot of canvases. If I were doing a lot of canvas, I might have taken a longer look at a printer with roll handling capabilities.
You rarely see clogging complaints about the 3880. I have yet to have a clog on mine and it sets for a week often without printing. I don't think it has ever set idle for two weeks.