The choice of original negative will doubtfully be of major interest to anyone viewing your portfolios, other than myopic photographers. A print portfolio is about the prints. Subject and style should inhabit the distinct portfolio. Usually no more than between 10 to 15 images, "professionally" matted. so that they may be handled safely. Create separate portfolios for disparate theme and style. If someone likes the first, presumably your strongest work, they will ask to see more.