guys my brother is car sound manager at JB HI-FI parra store so ive heard all the brands and i recommend JL audio or Kicker for splits..

im running kicker splits of a JL amp 300/4..
im running a W6 JL Sub of a JL 500/1 amp..

im thinking about running another w6 with another 500/1 amp soon..

just waiting to do the custom install but ill post pics for you guys tomoz or maybe even tonight.

hassy