Quick subwoofer like SVS micro 3000

I have a minimal set up at the moment with Blueroom Minipods (funny looking wife-friendly speakers) connected to Bluesound Powernode. 

By many accounts, the speaker has actually decent sound but lacking in bass - and I was advised to find a "quick" subwoofer with smaller driver size.'

So, the strongest candidate right now is SVS micro 3000, which I also appreciate the look of.  Some reports say, though, that RSL Speedwoofer 10s MKII is quicker and better value. I guess my question is how can the RSL be "quicker" with ported design.

Any other recommendations for me under 1000 dollar range? 

Thank you