The Rockford Fosgate box and woofers hit hard at max power. I have it in my trunk with the center port firing through the ski boot opening in the back seat and the bass is impressive, very clean and tight. I feel like I couldn't have done better for the price with the amp that I already had which puts out 600 watts of clean RMS mono power at 4 ohms.
It can handle every bit of the power the amp can give it, probably more. The box looks great and is well constructed, the connectors work great, and the center port really moves some air. The dual voice coils provide a good variety of configuration options. I've been running it hard for 6 months with no problems.

This box is so loud and forceful! I'm running 600 watts to it from a diamond audio d600.1, and it literally will take my breath away on certain bass lines.