solo baric 15in L5 vs fosgate 15in T1

that has to do with what box you want.. and what bass you want SQ or SPL?  SPL i would go with kicker. SQ RF.

but thats just me.

i will have it in a sealed box wood. whats the diff. between SQ and SPL. so ill know what im looking for. so i know is that im tryin to get into compettion so i need somethign that puts alot of bass. cause right now i got three compvr kickers 15in hooked up to a 2,400mono amp so i wanna upgrade but stay witht he same amp. and the 15's are 500rms each

If your looking for more bass go with the Solo-Baric, But I wouldn't put it in a sealed enclosure. A ported enclosure will give you much more bass. just make sure you build it right.