I have the P3ESR. If you have a small to medium size room, I think they are one of the best speakers money can buy. In comparison to the Roger LS3/5A (15 ohm), the P3ESR retains the magical mid range and vocals, but with deeper bass and extended highs.
People sell speakers for various reasons (e.g. not compatible or changing electronics, room change, want to try something new etc.,). In fact, I am posting mine for sale because of changing to a much bigger listening room which the P3ESR is not designed for that. I have not heard of any updated P3ESR.