The answer to this question is determined by your individual needs. The most noticeable advantage of a cordless jigsaw is its convenience and portability. You get to carry it anywhere you want with you (read as where you don’t have access to a power source). Bear in mind, however, that batteries tend to drain, which means you’re going to recharge them. The harder the materials you work with, the more frequently you’re going to have to recharge the battery. Therefore, if you often work with hard surfaces, you may want to consider a corded unit (you can find a few reliable corded tools in my selection above, by the way).