The decision on which sub you choose in part, depends on what you are expecting from it. If you want deep bass found in some types of music, LFE for movies ect, I would be looking at an EP350 or bigger. I don't think the 175 would make a very noticeable difference with the M80s, which already have pretty good bass themselves. The 175 would extend the bottom end some, but nowhere near what the 350 would. Again, it depends what your goal is. Have you considered either the Factory Outlet(FO) or Owner's Club to bring the cost more in line with your budget?
