Maintenance
Ray did a good job answering the question. I have a fixed fin keel C22. I launch once in the spring and take it out in the fall. For me the fixed keel means no maintenance. If you check the forums and archives you will see that the swing keel does require maintenance. It is easier to launch, though, and that is its prime advantage along with the beaching thing. You'll love either C22, they are great boats!