That guy is pretty much right. Definitely evaluate what your intention is and whether the ski will be used primarily as a hucking resort ski or a touring rig.
Trekkers do pose some problems if you do alot of sidehill, but as a smaller guy you shouldn't have too much problem.
Dukes do have some durability issues to work through, but are a good choice if you plan to do alot of beefy inbounds stuff with the occasional sidecountry
More specialized bindings also work. I ride on a set of Fritschi Freeride Plus 90% of the time and have not had any noticable performance or durability issues
Skis you can use just about anything depending on what your plans are once you get where your going.
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