There are several business streams for Canada, and although I understand the marketing made in Vietnam regarding NB-PNP, options are not limited to the two you mention. The federal startup visa allows you to set up your business in any province (except Quebec), where the different nominee programs that most Canadian provinces offer would lead you to invest in their own province. Which program is best? This question is impossible to answer with such limited information, because it would depend on so many factors determined by your own objectives, both personal and professional. My advice would be to invest in a one-hour consultation with an experienced licensed immigration lawyer who could best advise you based on your particular project for Canada, because each program has its pros and cons and general information is never as pertinent as tailor-made solutions. You may keep in mind as well to immigrate through a passive investment scheme in order to get unconditional PR, then take your time to start your business at your own pace without risk of losing your status in Canada if your business project were to fail.
