ppi subs

anyone know if 10" ppi c1 subs are any good? i'm thinking of trading someone 2 12" JBL GT1241 for them. not sure yet. let me know please.

depends on the sound you want if you like subs for what they are made for (bass) then stick with the 12s when you go down to 10s you loose a piece of bass and if you really desire bass you need 15s or bigger which have no highs or mids