If you go for the Pioneer through Amazon, I know theres a couple of 30% off coupons floating around for Pioneer gear. Try this coupon just before checkout: VRCBKCX6
I have an AVH-p3200BT and it works great; but one thing to watch out for with Pioneer products is BlueTooth Audio streaming. Iven with the 'BT' after the model number; audio streeming will cost you another $200 for the right BT module.
If that coupon doesnt work you can try searching for a new one over at
www.slickdeals.net; and for anything else for that matter.
I'm partial to the shallow Pioneer subwoofers but also hear 'ok' things about the JL shallow mounts.