I have the PS Audio Duet and I like it. You can find them on Audiogon for $300 or less. If you have multiple circuits you can also look at getting the Soloist, which is a in the wall socket that provides all the filtering and surge protection for about $150.
Good Luck.
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Emotiva XMC-1, Outlaw 7500, Sonus Faber Olympica III Fronts, SF Liuto Center, SF Surrounds, LFM-1 EX, Oppo BDP-103D, Apple TV (Gen. 4), Mitsubishi 65" Diamond DLP, Outlaw Cables, PS Audio Power Quintet, Duet and power cords.