Canadian Tire also has this model:
http://www.canadiantire.ca/AST/browse/6/Tools/1/CompressorsAirTools/ImpactWrenches/PRD~0541265P/Mastercraft%252BMaximum%252BImpact%252BWrench%252B with%252BDigital%252BControls.jsp
Lets you dial in the torque to a desired setting and it is electric. Some reviews are mixed on it, and the sale price seems too good to be true. The cynic in me wonders if there is a flaw and they're trying to get rid of them.
