I am considering purchase of Vutek QS. Would like to hear good or bad experiences with machine. What about: - print quality (banding, bidirectional banding...) - quality of backlit images - material skewing when using flatbed - quality and consistency of roll media transport (for bigger, continuous jobs to be printed on roll media - vinyl, paper...) - ink waste numbers (from cleaning, purging, maintenance...) - white ink quality (clogging, what about days when white ink is not used...) and else... thanks for any response