Admittedly, due the popularity of canvas prints, a frequent comment at my store goes along the lines of, "Frames -- and then you don't like them anymore," or, "... and then it needs to be changed."
Still, a custom matted and framed print appropriate for an image can look great on the right wall, such as this Salvador Dali print. This one was completed in consultation with a customer, as he knows best what is in his home (warm and neutral tones). Although the print had been rolled for about a decade, it still looked great. Not all posters are made the same. You can tell just by holding the paper between your thumb and a finger to gauge the thickness; some are printed on high quality stock, such as this one, and is harder to wrinkle. As such, it lasted years and will do so again under a glass-covered frame.
The linen mat board used as a border