Hi , Chesseroo this is the good link to the Mission 754.
They say " The Mission 754 Freedom 5 is our flagship loudspeaker system. It offers ultra wide bandwidth, uncompromised performance while, like the 753f, remaining in an elegant and visually attractive piece of furniture.
The advanced bandpass design of the system, using a massive motor low frequency unit with an ultra-long throw voice coil, provides exceptional deep bass energy without the overhang and distortions associated with lesser designs. This results in a fast, deep, coherent and clean bass."
This last phrase in that company's writing is totally false. I have a Kenwood Vr-3100 receiver; this was the first top reveiver named "Sourvereight" ( excuse the spelling if bad ) from Kenwood in late 90's ; it is not the best receiver like NAD or McIntosh etc... but it gives a very good sound; anyway... maybe should i expect that my receiver could be the faulty equipment and this would be why i didn't get this deep bass from my Mission, even when selecting loudness=on and setting the bass to maximum.
But before selling my mission, i've made a test; i've put my new M3ti onto the top of my Mission and connected/disconnected them alternatively, and listening music allways with the same volume and bass controls setups exactly the same level.

Result : Wow ! and surprised ! these little M3ti gave me the same rich and clean medium and hight's, but maybe with just a little bit more bass than my Mission. Also, since i've sold my Mission, i've left my m3ti connected, and i think that the m3ti are more clear and easy listening with a bit more bass at low volume than my Mission.

I don't expect for rattling, shaking and heavy booming type bass since these loudspeakers are used primely for music stereo listening , but knowing what these little M3ti can do , i can surely imagine what should give the M40's. I think that with the M40's there will be no more needs for setting the loudness and bass control to maximum , and when i'll want some more, i'll just turn on the bass control more and more if needed .

I will write back my impression as soon as i've listened a couple of hours my new M40's.