Jake, you've listened to and played with more subs than me so I trust and respect your opinion.

I'd really like to get my hands on a 400 and compare it to my 600 in my 4,000 cubic foot space. I'd like to hear and feel for myself if there is a significant audible difference.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated