Q: what is your oppinion on kettle bells? are they really that good to use vs weights and ez bars?

A: Kettlebells are great pieces of equipment that allow one-arm power exercises like snatch which cannot be done with conventional dumbbells and you can structure very complete exercise programs using just kettlebells. But there's no evidence that they're superior (or inferior, for that matter) to more conventional equipment like dumbbells or barbells. So it's a matter of personal preference. Variety is always great and you could use both conventional equipment as well as kettlebells in your training.