I have the 18v makita 1/2 impact gun just as good as an air gun u actually have to be careful not to over tighten bolts when going back on. I'm a electrician so have a cordless screw gun, sds drill and a good few other 18v tools to go with the 18v battery's so it works perfect with me. If you go get a el impact gun that ur not using all the time the battery's get f**ked. There is 110v el impact guns you can get they must p be as good if not better than battery impact guns