disclaimer: the following is my personal opinion based on my personal experiences with both of these subs. Take it for what it's worth as it may be worth exactly what you paid for it!
No offense meant to those that have and love their L7's however if someone
gave me a pair of L7's I wouldn't even use them as stands to hold up the cabinets with the W7's!

Just kidding, I actually think the square shape would make excellent stands for speaker cabinets!
Seriously though, if you just want to
make some noise and impress your friends with how loud it is

get the L7's and put them in a big ol' ported enclosure with a ton of power. If you want something that
actually sounds good 
while beating your brains in get the W7's
and install them properly.
As mentioned, just my opinion but that's what you asked for.