One word...just one word
SENSATIONAL ! 
If I didn't make my own boards this is the board I would buy !
Finally a production board that feels like a custom board.
I hear the RRD hardcore quad wave rides even better. 
I'm going to say it again, just "SENSATIONAL"
I spent the same afternoon on a demo RRD Cult in 75lt version.
The board was very comfortable and secure to turn in, even bottom turning in bouncy cross on-shore slop.
Both Mike (above) and I thought they it ran down the line well, and the little quad fins gave a great wave riding feel.
Ha ha yes I did.
The 85 quatro and the rrd 83 both feel so awesome on the wave, but the rrd got me going just a little bit earlier and you know for my local
that's a big bonus.
Going down to M
