We know this will probably confuse you more, but it depends. Although some may try to convince you, there is no universal answer. It depends on numerous factors regarding your project, most importantly those of available space in a cavity to be insulated and the moisture environment. In our paper Open Cell vs Closed Cell, we discuss these factors in more detail. In western New York, open cell foam can be used in most projects. As usual, our highly experienced professionals can give you a recommendation.