Neptune systems apex wav question

[Burton182]

Was wondering if anyone has any personal hands on review of the Neptune system apex WAV? Was considering getting a pair for a 220 build vs getting 2 mp40s? Also would it be possible to operate more then 2 pumps. Say one on both sides and then say 2 on the back wall?

 

[Smotz]

the starter kit will run 3 pumps but only comes with 2

 

[Burton182]

What's everyone's opinion on a pair of these compared to a pair of MP40wqd on a 220?
Thanks