The Crunch's are great amplifiers, so are the RD 3250's.
I dont know a WHOLE lot about the Crunch's, but I can comment on the 3250.1's
Zenon boards, efficient, gobs of power, .5 ohm daily stable amplifiers. Good Electrical + .5 = well over 3300 rms, and that's being conservative. Honestly closer to 3500 rms from the testing a few people have done on them.