There's a giant amount of money and debating on this point.
Realistically, there's compromises everywhere. One binding might be strong, but it's not light. Another is light, but you shouldn't try to jib on it. And on and on.
Then there's the myriad systems of plates and other things that people have created as simple fixes to a much bigger issue. Typically, these require a lot of faffing about to do properly.
Personally, I'd suggest sorting out how much you're planning to be touring. Be realistic, because this is the most important question.
If it's not much (less than five days per year), not very far, and not through complex terrain, then a pair of Alpine Trekkers in a downhill binding are just fine.
If you're between five and fifteen days, doing moderate touring, and skiing the same setup inbounds, then look to the plate bindings. The Guardian/Tracker seems to be the most durable, the Marker sliding mechanism/heel risers can be a bitch, and the Adrenaline is probably the perfect option as long as you don't do massive switch landings.
If you're touring more than fifteen days, get a tech binding on a dedicated pair of skis. There's the Beast series for the true rippers, middle of the road options like Plum, Vipec, Ion, Radical ST/FT, or more dedicated uphill/race clamps like the Low Tech or Speed Radical. Add the Kingpin once it's on the market.
Don't forget that touring boots are really, really nice. Essential in the 15+ category, and some sort of walk mode is nice in the 5-15 touring days range.
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