I'm still bumping 3 10's....2 old school fosgates he2's and 1 10" coustic. Each one handles 400rms hooked up to an infinity 1211a 1300rms amp. All three are in a triple sealed enclosure. Sounds pretty nice!
fyi. I've met the guy last week. my highs are louder than his.
Edit. this is also an install that I did myself that I'm not finished with the wire. I got to get everything working to my spec's right before I even worry about that. I didn't waste a million dollars on an install (the guy told me that it cost him 80 grand for that install). my high box is secure with screws inside of it. I just never got around to taking the straps off yet