I currently have alpine type r swr-10d4 (2 of them) and running them off a crescendo bc2000. I must say it knocks REALLY hard and it's very clear and crisp no distortion. I am selling them if u wanna give me a good offer because I would like to upgrade to SSA XCON
I've never had RE Audio, but I've had several sets up Alpine Type R's... and I was pleased with them. This time around I'm going for soundqubed subs though.