I've got a pair of '11 179s and '08 179s which I kinda killed.
The 11's are noticeably stiffer, particularly in the middle ~1 meter of the ski. The tips and tails are about the same. This makes the 11s feel much less sketchy when skiing rubble/crud or going fast on hardpack. They are probably the greatest bulldozer style ski I have ever tried.
I reckon the 11s are a lot more fun. Partly because they're so stupidly wide.
Also they have a slightly early taper so they have less swing weight and a little more sidecut, and it's even harder to hook the tips/tails in soft snow.
The big change though is that they now have carbon fibre stringers like the Kung Fujas, this makes them quite a lot poppier and livlier than the old ones which at times could be just big dead noodles.
Personally I prefer them over my EP Pros (which I also killed, I'm too fat...)
All wicked skis, IMO '11 HB > '09 EP > '08 HB