Up until 3 weeks ago I included Kettlebell drills only sporadically. Maybe once a week. I have been doing routines out of RKC and the articles section for the past 3 weeks and can not believe how different my body looks in such a short time. Kettlebells obviously hit different muscles more intensely then the slow lifts. I had been working on a 405 dead but i'm giving it up because this is more fun. I have been using a 60lb dumbell but i'm now giving some thought to purchasing the real thing. I feel the 60lb dumbell is perfect. What does everyone think? What size should I buy?