Yaar seriously, I dont like Pioneer.
Their old headunits were lovely, and ive liked their CD changers.
Why do you want a Pioneer subwoofer.
JL is expensive yea.
If you want HARD hitting bass, try a Kicker, very loud stuff.
Infinity is nicely balanced.
I listened to Rockford Fosgate P1 n P2 on sunday ... they werent exactly something comparable to Kicker but not bad to be honest.
I personally also like the Cerwin Vega VMAX.
That Premier series subwoofer is bound to be good ... but if you compare there are loads of better stuff available.
How much cash you got ???
A single 12" Kicker L7 properly boxed and properly powered is more than enough unless you want to enter competitions. You wont be able to listen to it fully pumped up for a long time without serious headaches. Believe me on this! Gona cost though
VMAX 15" is also very nice in my opinion.
Kicker Comp n CompVRs may have low power ratings but they bang good.