Then a 10" sub will be more than adequate, my friend!

As far as that 10W0 ad that you linked to, if you put 75-150 watts to that thing, you would be pretty happy.

Here is the link to JL Audio spec sheet:
http://www.jlaudio.com/subwoofers/pd...2_15W0_MAN.pdf

On thing that the ad didn't mention is the size of the box. You may want to check on that!