Other alternative bodies to supplement OMD 1

Looking for 2nd micro 4/3 body to supplement my great OMD 1 camera. Because I have 3 other cameras making 4 different battery and chargers will want to stick with a body compatible to the OMD 1 charger. I have eliminated the OMD 10 therefore. The OMD 5 fits the cost (approx. 500$) lens mount, and battery. Wonder what other body would be consistent in the same price range. (OMD 1 second battery great but cost factor)

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