I also do Fat Quarter Shop, and do the Fat Quarter Clubs only. I used to do the Charm Pack club and discovered I am not a fan of charm squares or layer cakes since they are not always cut correctly. I am however a huge fan of fat quarters! I have not found any other clubs that have sparked my interest.
Batiks- Monthly
Art Gallery Fabrics- Quarterly
Low Volume- Monthly
Kaffe Fasset- Quarterly