You'll find several differences between the two, though the differences will also vary by what brand of canned chickpeas you'd use. As a rule of thumb, using dried chickpeas that you've cooked at home will yield tastier, cleaner flavor (as tinned versions can be slightly metallic tasting). However, one of the other main differences is in nutritional value. Canned chickpeas can not only have increased sodium levels. But some studies have found that the nutritional value of the vitamins, omega-3s, and amino acids is also increased (by up to more than 50% in some cases). However, this likely needs further study.  Cooking the beans from dried may also be easier on your stomach as you're able to soak them and use various tips and tricks to make them more digestible. When using canned chickpeas, make sure to use ones without many additives. Rinse them well and, optionally, boil until they are soft.