I have no experience with a particular impact driver but use cordless screwdrivers every day in my work. Best quality......Milwaukee, with DeWalt and a few others forcing them to work hard to stay there. For quality/price Hitachi is the latest to join the battle at the top.

One point that I would recommend is go with the latest lithium-ion drivers. They may cost a bit more but the torque, weight & battery life far exceeds the former ni-cad variety. They are usually smaller in size, which is an added bonus.

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Sam

84 300SD 350K+ miles ( Blue Belle )