There’s no question that Dragon Door has the gold standard of kettlebells.  If you want to use the bells that RKC Chief Instructor Pavel Tsatsouline uses, Dragon Door bells are the route to go.

If you aren’t sure how long you will stick with kettlebells (I hope it’s forever) or you don’t want to invest in a bell that you might quickly outgrow, a less expensive option with comparable quality can be found through Muscle Driver.

If you have found a bell you want to purchase somewhere other than Dragon Door or Muscle Driver, my advice is to make sure it’s cast in one piece.  I don’t know about you, but I wouldnt want an iron ball over my head attached with a welded handle.