The M2200s small footprint is definitely a plus. I was going to by the emotiva xpa-3 but the shipping to Puerto Rico is outrageous. For continental US the shipping is 25 dollars... and for Puerto Rico that is 3 hours from Florida the shipping is a whopping $195 dollares... That's outrageous.
I will check the M2200.
M80 VP160 HSU STF2 Sub 4x M3 In-Ceiling QS10H Side Surr. QS8 Back Surr. 3x Monoblock Amps, DEN-X4300