go with the athena. It has a heat exchange! giving you better temp. stability, wich means consistant shots. You`ve been working on leavers for twenty years, some advice please. Iv got an athena but have noticed that the group head doesn`t have a dump valve. This makes me nervous to use a blind filter basket to clean the group head. Is it ok to use a blind filter basket to backflush the group head? or is it going to explode in my face.
is that a joke ?