Here's where a lot of people cringe while presenting different views. There's one that says that M22's + sub woofer is as good as (well almost) as an M80. There's another group that says you are missing mid bass by going this route and should stick with either an M60 or M80. I'm of the 2nd opinion after living with M22's and EP350 for a while. I don't think the EP500 would give me that much more, except in volume (if turned up) and bass extension.

https://docs.google.com/spreadsheet/ccc?...amp;usp=sharing