Which one is better?
VX10 
100Wrms/150W dynamic, 
10" woofer, 
36-120 Hz, +/- 3dB
33lbs weight
$169.99
DLS-3500R 
160wrms/350w dynamic
8" woofer
34-140 Hz +/-3 dB
44lbs weight
$199.99
typically, the larger sized woofer is recommended, but it seems a difficult choice in this situation, especially when the $30 difference is bearable for me.