I think he feels the lower smoother, thump of the 400 is better suited to his tastes while we like the harder impact of the 350.

Wait till you get a load of the SVS. I am watching Star Wars Episode 1 with my son and this thing shakes the house like I have never felt, hits hard and rumbles nice and low, almost like the Velodyne and EP350 were mated.;\)

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70