Just wondering which way would be better to go? Cost about the same $$... Anyone have any opinions on the matter? My room is about 17x22x8...I do have a fair amount of treatment (Bass traps in each corner and panels at 1st reflection points...) Any help would be appreciated. Thanks, Bill

Ps. I am also considering a MFW-15 instead of the knight, but don't want to have to wait so long...

Epik Castle, but that is just MHO, which means squat cause I ain't heard none of those. No really I think the upgraded driver and amp of the Castle would be better. Not to knock the MBM theory to much, but one good/great driver can handle 10ish-80Hz just fine. That is "only" three octaves. Get the best sub you can get, which probably is the Castle for your money, and don't look back, want more omph, get a second Castle :) .

agreed with the above.