My vote is for Mimaki. We have a JV3 and a JV33 and they can burn through banner material without so much as a hiccup. Banner is heavy and is harder on printers than regular vinyl, Mimakis are built like a tank and stand up to that abuse well. I've heard mixed reviews on how well other lower-end printers like Rolands and Mutohs handle heavy rolls or long runs of banners. I'm sure someone with more experience with those brands will chime in with their experiences.