ExactPower EP15A

I was thinking of getting one of these after my not so stellar audition of the PS Audio P-500. Guys that have or have had one of these (the latest model)good or bad stories about them? Do you have everything plugged in to it or just front end gear? Break in time? Different power cords? I've heard that Ps Audio tried to buy the patent from ExactPower but they weren't going for it. It EP15A looks a better design all the way around. I was thinking of the World Power Power Wing but it doesn't do anything as far as maintaining voltage from a low or high voltage situation or correcting your 60 hertz signwave. The EP15A will maintain 120 volts at it's output while the incoming voltage drops as much as 86 volts, upon hitting 85 volts the unit shuts down to protect your gear also keeps you a 120 output up to 139 volts and shuts down at 140 volts, doing all this with minamal heat unlike the PS Audio P-500 that was spontanious combustion hot with just a 12% 52 watt load on it. Thanks