Hi Michael, nice alias name BTW!(see my avatar)
Funny you should ask - I just had this exact question a few weeks ago as even though I am forced to stick with an on wall type setup with my M22's I do have room for an EP800 at the back of my HT room (I currently have the EP500). Anyway, I traded some messages with Alan Loft on this, here is the condensed output of the conversation:
The EP800 has greater dynamic range/output capabilities compared to the M22's so they are not matched in their sheer output capability. However the EP800 can still blend tonally nicely with the M22's and provide serious bottom end for great sound. So, with that pairing you could be pushing the M22's very hard while the EP800 would still be taking it easy, but played within the limits of the M22's it could be a great pairing - you just wouldn't be using the full output (loudness wise) of the 800.
So, that being said, how big is your room? If large, you might want to consider the 60's or 80's with the 800. Hope that helps.
Cheers,
