what is more usefull,impact driver or cordless drill
 

I use my impact driver a lot more than my cordless drill. So the cordless has pretty much been relegated to the tool box.

Which one do you use more?

I use my cordless drill more, don't really care for the little impact.

wish i still had the impact/drill I gave my dad. It was a panasonic that had a 1/2 inch square drive for using sockets and then adapters that went onto that for the hex and the drill chuck. switched from impact to drill like you would switch a hammer drill. Mostly used it for impact on farm equipment.