having used..and currently owning both..sealed or ported i like the LI better all around..the SX got very loud but i was more impressed with the output and pretty good sq of the LI great sub...i would say its a better form of the SE
if you want to go with a 12" you could just get it off of me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif