I was reading a lot of the opinion and conjecture in the String Forum when it struck me that I notice a bigger impact on my sound when changing cabs. I have 4 at the moment, concidently, 2 are sealed and 2 are Ported. They consist of 2x10, 2x15, 4x10 and 4x12. Also have owned a lot more over the decades including 4x15, 2x12, 8x10, 1x15 double stacked 8x12 and double stacked 4x12's plus anything else I forgot. If I had to pick which had the most punch and articulated bottom end I would say the sealed cabs have it. I have 10 basses and find this consistent across the range which extends from accoustic bass to semi accoustic, P to J through to 5er's in both passive and active. Anyone else find the same thing?