I have the Pioneer AVH-5500 HU, stock fronts (I'll be swapping them out for Kicker comps as soon as I figure out which tier I wanna go with), and 2x Kicker S10L7s in the trunk powered by a Kicker KX1200.1 amp.
Honestly, because of the 2x subs and the powerof the system, I never really cranked them because to get them into their comfort zone, the stock fronts would distort.
So for me, 2x 10s is a bit of overkill. I am debating switching for another Zenclosures box with 1x 10".