Harold Fowler's strikers are excellent and a great place to start. I have 1, 2 and 3 piece strikers from him and love them all, but honestly the 1 piece strikers that he builds are all you'll ever need. Those are the ones I usually carry most often into the field. Dymondwood, purpleheart, yellowheart, canarywood, and black locust all work well for me on the calls you're using. Also keep you eyes on the classifieds section, all lot of very good strikers pass through there. Good luck.