I see, so an all mountain that will handle crud, crust, chopped and maybe some powder, if you ever be so lucky :) . So maybe a ski that will be damp (opposite to the racing skis liveliness), around 90mm waist, with metal, as you are a strong skier, you will be able to handle it.
So some thoughts along those lines (or a bit bigger):
- Dynastar Outland 87 (Cham 97)
- Rossignol Experience 88 (Experience 98)
- Volkl RTM84 (Volkl Kendo)
- Atomic Crimson Ti (Atomic Theory or the Access, like you said)
- Salomon Enduro 800 (BBR 10.0)
The S3 maybe is not bad, but could be too soft for you?
I think if you go with the 80-90 you could replace completely your AC3. If you go with the slightly wider ones you will have more soft snow bias, but will lose a bit in piste capabilities, like the carving feel (which some people will think is not cool). Those are the ones Im most familiar, for sure there are some blizzards, Elans, etc that fit the bill.
For your height, I think around 180 cm would be nice. For all mountain, if yo go a bit shorter will make the ski easier to steer in tight spaces (the longer ones will be more stable at speed). You need to experiment a bit to find your sweet spot. I'm 183cm and for some skis 177 is cool for me, for others I feel its too short. So if you can get one day to rent some recent all mountain skis and ski maybe 3 or 4 in different lengths so you can get a feel, it would be great exercise for you.