Craftsman #6903, 1/2" Corded Impact Wrench
Craftsman's 1/2" corded impact wrench has specification close enough to the Kobalt that one could almost wonder if they came out of the same factory. However, they are different enough in appearance that it's doubtful that's the case. This one also provides 350 ft. lbs. of torque, running at 2100 RPM and 2700 IMP of impact power. That makes the two tools comparable. However, the Craftsman doesn't have the five year warranty of the Kobalt, which is why I gave the number one slot to them.
This one also has a toggle operated trigger, giving you excellent control over tool operation. They add a LED work light located at the base of the handle so the tool's nose doesn't put a shadow right where you need to see. It also has the green power indicator light at the base of the handle which Craftsman has been putting on a lot of their power tools. Lastly, a "bull-nose" friction ring holds the sockets in place.