JL 10 W3v2 vs. 10 W6v2

I know these are both great subs (from what I hear) but was wondering which would be a better selection to go in a LSV. And how much more power (and money!) would the W6 run as compared to the W3?

We aren't looked for anything to blow the boat out of the water, but just something with good quality, that hits pretty hard, and won't require a ton of power.

Thanks in advance.