its kinda impossible to tell..... dimensions of the boxes will tell alot...just talk to a local professional who actually knows what he is talking about
the 3pcs JL w6 would be louder if you have more amp. and have the space you need for the box of 3.
but with that amp you have. by basing on your resources. go for the kicker l5 2pcs. it will perform better with your amp. and technically speaking, you can just tap the + + and - - (parallel) and it will be much easier without having much complication about the "OHMS"
unlike with 3 amps and with 1 amplifier, you will have some troubles with your OHMS and might just cause the units not to perform well.
so my suggestion/opinion. go for kicker L5's
we all know that those kicker punch hard too. no doubt . aaayt?