Subwoofer B&W ASW610 vs. SVS SB3000

Hi All,I currently have a B&W ASW610 and 5 channel B&W speakers (CM2 S10 series). I hear great things about SVS subwoofers and thinking about replacing my ASW610 with a SVS SB3000.

Any thoughts? I am gaining stuff or I am way off?
Appreciate the inputs
The Bowers sub doesn't go as low as the SVS 3000, so deeper bass from the SVS. Rather than replace the B and W, add an SVS. You really should have more than 1 subwoofer.
That is interesting. I have not considered it that way. Will there be any mis-matches?