I had a few of our wedding photos blown up to canvas prints. One of my friends used them and recommended them to me. Their prices were some of the lowest I've ever seen, even lower than the Groupon or Living Social deals that are occasionally posted.
Their website did not have a preview of my canvas print when I uploaded, so I was a bit concerned. But right after I submitted my order, I received an email from one of their reps with a preview of my print. They made some recommendations about the wrapping of the edges which looked better than what I originally wanted.
I really appreciated their personalized service, and when I received my canvases a few days later, I was extremely pleased! I highly recommend this company.