We used to have an HPZ3200 (the non PS one) which produced great quality canvas, but slowly, and quite pricey. If you are like us and targeting the general public (with these sort of
pretty inexpensive canvas prices) then every penny counts in the margins. Lets face it, most of our customer images aren't going to be hung in an art gallery, so you can sacrifice a little in gamut for some more speed, cheaper inks, and lower media costs.
We swapped to an HP 6200 for posters, but we actually use our HP Latex 330 for canvases. We like the fact that the Latex inks come off dry, cured properly to the canvas, which means a) no rub-off and b) no need to varnish them. Quicker to do, less labour, faster turnaround, and higher margins.
Ok, the printer wasn't cheap, but if you are planning on doing a lot the running costs are much lower than a pigment ink HP like the Z3200.
Once you get the knack, doing the corners becomes a breeze, just watch a few videos on YouTube, and have a go!