I am currently assembling a home theatre package. If I will be configuring the Front speakers using the "small" option (x-over at 80 hz) on a home theatre receiver, together with an active Sub, would I still benefit from moving from M3 to M40 or M50? Would M40 still provide greater output than M3 if both are filtered below 80 hz, or would I benefit more from presumably better imaging from the M3? Thanks!