Does anyone have any experience or thoughts regarding the IMPower variable speed motors by Marathon Electric? It seems like a great option for those of us looking to replace a motor in the 1 HP range. Turns on at high speed for 2 hrs. then to a lower programmed speed for energy savings. Costs about $450 on line with a 2 year warranty. Seems like a nice compramise between a regular two speed motor and the more expensive and complicated Intelliflo type pumps. The web site is www.impowerdealer.com. Thanks for your thoughts.