All of our current recommendations are for perfect binders, ie hot glue binders. Like cutters, these come in manual and automated varieties. Deciding between these two types can come down to your expected volume, budget, and/or physical limitations. Magical automation isn't a solve for all your problems, however--more bells and whistles can also mean more money to burn on parts and maintenance. Off-brand manual binders are pretty solid for their price point, but they're slower. Some automated binders boast of producing ~200 books per hour, while less expensive manual types can bind roughly ~50 in the same time span.
Budget
Bonnot gang member ($$$)