http://69.93.14.227/index.cfm?fuseaction=product.display&Product_ID=2064link me to the exact models you are refering to.
that doesnt make sense. how you have the greater than less than sign arranged. anyway the SSi is not exactly a SQ woofer, it can pick up those super low notes. the TSX gets low and it has super tight clean energetic bass. i think that is a very very good sounding woofer. in fact i have two more coming to replace my SSi's next week. and the Tsi is actually what i have in my truck for the time being until i get my TSXs. the are in fact better sounding than the SSi's, they just dont get as low. they are way more efficient than the SSi too. they dont take 1/4 of the power to get just as loud. the only downfall of that woofer is it cant reach those super low notes of the SSi. other than that it is a mini TSX without as much output as the TSX at the higher notes. but, for an entry level sub that cost $100, you simply cant go wrong.If someone else mentioned it, sorry, wasn't going to read through 3 pages as I'm tired as hell right now. TREO> SSi, TSX, TSi