I have a RIGID from Home Depot...very happy with it, has very low THD to power sensitive electronics:
http://www.homedepot.com/p/RIDGID-6...12B/203183985?N=5yc1vZbx9nZ18g#specifications
http://www.homedepot.com/p/RIDGID-6...12B/203183985?N=5yc1vZbx9nZ18g#specifications