I always assumed the on-walls were garbage. I couldn't have been more wrong. The real wood veneer makes them look like art. It's also quite nice to get the speakers off the floor and open the space up.
Here's a shot of the M2OW in my living room and a close-up. They have ports on the bottom to extend the bass response.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated