i would agree w/jd3, if you are talking about the single-woofer songsurround. however, if you are talking the mtm iteration, and are willing to go w/a pair of subs and an active x-over, i would choose that instead of the st's. in almost all cases, imo, a stand-mount iteration of a floorstander, when properly integrated w/active x-over and subs, will always outperform the floorstander. it will likely cost more, but it will punch way over its class, imo.
ymmv,
doug s.