عمر أمين

You mean by "tire hammer" and "little giant" the coil spring hammer?

Dear Thomas and Frosty, 

I mean by the coil spring hammer, the one in these links

https://goo.gl/IB3yCQ

https://www.youtube.com/watch?v=q3nUCwQ6JQk

And I mean by the leaf spring hammer, the one in these links

https://goo.gl/cE7tQB

https://www.youtube.com/watch?v=KPZSYzDCRVE

I mean by "better", I need to compare them in according to cost and easiness to manufacture and build  

Hello  Everyone

I am trying to choose between different types of power hammer, the leaf spring one and the coil spring one 

Can anyone please help me in this?