Best non-Magnepan rears to mate w/Maggie fronts?

Our wonderful new space for a home theater is not conducive to mounting my prized MMG-Ws for the rear channels. I need to go with a smaller woofer-based rear speaker and was hoping to get some guidance as to what would work best.

This room will generally be used for sporting events and action movies - the MMGs, MMG-C, and Velodyne sub up front will do all heavy lifting and 2-channel lifting.

Thanks!
Rob