"Watch out Revel, Paradigm, SVS and Klipsch as that day may be coming sooner than you think."
This day has come. I own two subs: one $699.99 from SVS - SB-2000 and another $499.99 from MP - Monolith by Monoprice 10" THX Select Certified. SVS is 12'' sealed; Monolith is 10'' ported design. Both subs are 500W RMS.
So I had a good chance to compare these subs head to head. In my opinion, Monolith's sub is much, much better performance and value than SVS SB-2000. Don't get me wrong - SB-2000 is great sub, but Monolith 10'' THX Select is simply amazing.