I'm very happy with my 24-inch HP Z3100. But I'm getting rid of it. And I'm replacing it with the 44-inch version -- which I regret not buying in the first place.
Here's my thinking: When I print on canvas, it's necessary to allow two inches top and bottom for wrapping and stapling. That means the largest canvas print can be no more than 20 inches on the short side. That's just not big enough for "living room art," which is what I'm being asked for most often. (I'm not a full-time pro, but I do sell quite a lot.) With the 44-inch model, I can make a canvas that up to 40 inches on the shorter side, plenty big. A canvas measuring 40 inches x 60 inches certainly makes more of an impact.