Hi Fernand!
Since no one else replied I'll throw in my humble canvas opinions.
I prefer the matte canvases with any gloss added to the coating/laminate. Canvas really needs protection from physical damage like scratching since the ink and coating is fragile and the print will not usually be protected by glass.
My favorite canvas is the epson piezo pro but Epson does such a poor job with supply I'm giving it up once my stock on hand is gone. Also I've had several prints wrecked by canvas defects that should never have made it out of the factory. In addition Epson hasn't yet done the profiles for the PP & 7880/9880 and for my printer at least it would need one to get the most out of the combination. I do like that it has a nice feel and is similar in color to regular artists canvas -- less inkjet-y I guess would be the word.
Ilford's smooth canvas is very good and similar to the piezo pro but even harder to find and relatively expensive so it was not an alternative for me.
In the Piezo pro's place I'm starting to use Breathing Color's matte canvas called Chromata White but I'm currently waiting on profiles as it does not seem to do well with the basic epson profile for WPRW. Also it is more difficult ordering from them as they do not have an easy shipping method and tend to use UPS's economy which is basic robbery for Canadians. The Chromata white is smoother, cheaper, and whiter than the piezo pro and also from the few rolls I've used so far seems to have fewer defects than the epson product.
I've also tried a bit of preimer art's water-resistant canvas but didn't care for it mostly because of the gloss.
We had a long thread recently discussing coatings and other options here:
http://luminous-landscape.com/forum/index....showtopic=19862Good luck
Doug