i've owned treo ss's (ssi now)...sq is good. spl is good. i'd expect the ssx's to get louder and sound about as good.
the treo's weren't a waste of money (i paid $700 for a pair of 15's). they got loud, they played low and they kept up with just about everything. were they the best subs i've owned? no, but they were good ones.
one problem with treo, other then price. warranty/customer service. at least for the local shop that used to carry treo. it seemed that they couldn't ever get anything fixed and if they did warranty it, it took forever. so he dropped them.
o get the ssx's, u'll like them, probably alot. and the thing to remember, it doesn't matter what we think, but what u think. if u've already heard them, and like them, then noone here should be able to tell u otherwise.
wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee //content.invisioncic.com/y282845/emoticons/peace.gif.2db28b618ed8d1964ebbe2f5021d2c39.gif