JL IS SO AWESOME ITS THE BEST THATS WHY EVERYONE SHOULD BUY MONEY MEANS QUALITY
JL AND RE are the same price now arnt they? I could of sworn RE is over priced again..
Seriously though:
Make your choices what fit your budget and space, then figure out what you have to go from...
I wana spend 600 on a system? I wana spend 2000 on a system.
Then split it up... Even among what you wana spend it on....
Speakers, speaker amp, subs, sub amp. So split it 4 ways with a little left over for wiring.
Subs and sub amp, split it in half with a little extra for wiring...
That what I would do, dont spend 800 on subs and 100 on an amp, dont gimp your system.