I've just had the calf buster for a short time and it's taken some getting use to, but so far I'm getting some pretty good workouts in (as someone who has struggled with calf growth, and even got marked down in bodybuilding competition for a lack of calf development, I was very keen to give it a try)! In my opinion, the pros are that it's very compact, it would be easy to carry in a gym bag, and I seem to be hitting different fibers when I use it (not only am I sitting down, I'm also experimenti...