Current crud favorites: 184 & 191 V-Werks Katanas; 184 Bibby Pro (probably works because of my light weight); 189 Pettitors 120; Enforcer 100; 183 Dynastar Legend x106; Kastle BMX 105 HP; 182 & 186 Rossi Sickles 111.
Because of weight/height, I usually find the longest 19x of good, burly crud skis to be slightly too long/demanding for me for versatile use, but they sure can ski/charge crud, often. An exception to this for me, in a good way, is the 189 (pull length 191) K2 Pettitor, when mounted forward. Until my knee got weakened, that was my favorite crud/powder ski for some years. I would aim for crud rather than avoid it, at speed. It is great on groomers too, and versatile. It does those Sean Pettit turns.
Another exception, probably, is the 191 V-Werks Katana. I've been skiing it this year, but am not yet sure of it for deeper or harsher conditions. It skis crud well so far, quick, yet with the charge of a fairly stiff, longer ski. Something about its very small camber makes it "speed boat" through/over crud very stabily, damply, much like the shorter 184 version. Fun. (This year the Black Crows rep tried to describe the same damping/crud effect of little or no camber with his Daemon 98 ski, but I haven't gotten a chance to try that one, as yet.)
I suspect the Bibby/Blister Pro 190 might also be an exception, for me.
The Sickles work in part by holding an edge or contouring near the bottom, through all crud/chop that way: kind of like
@Ron has described the Stockli SR 107. You mostly don't feel the crud. But the Sickles don't float more than a modest amount. Great crud ski, though.
I've only demoed them, but the new 183 Dynastar Legend x106s seem to work in a similar way, except with a quicker, shorter turn as default.