Good suggestion on the ED 9.1
Use the system builder discount, you can pick up some deadening for basically free.
Youll get around 1500 out of the amp, and its rated stable at 1 ohm, but some people run it at 1/2 hm daily. Very solid amp.
About Rockford, they arent bad amps. They wont sell an amp that doesnt do its rated power, they just tend to be quite expensive when compared to other amps of the same power build quality.
Dont let that statement lead you to believe they arent good amps.