I have one SVS SB16-Ultra and really like it. I had the SB13-Ultra for about a year when the SB16 came out ... I simply traded it in for full purchase price and upgraded to the SB16. Very good customer service / trade-up policy. I'd add this one to your list if you are one of the "masses" or if your interested in a reasonably priced subwoofer on Stereophile's Recommended List "A".
