I typically stick to using dry beans because a bag of dry beans will stretch over a few meals, whereas a can is usually a one meal deal. The advantage to the canned beans is that it’s ready to use. With dry beans, you have to soak them and cook them for quite awhile. I am a scatterbrained (multi-tasking ) cook ,so I only cook beans in the slow cooker now , which takes even longer (but they don’t boil over or boil dry ever!)
Canning gives you the convenience of canned beans while saving money.
The link above tells complete instructions on how to both cook and process your beans from dry, including a pressure cooker lesson.