Hans Ringger wrote a review of 4FRNT Skis Thunderbolt Ski Binding on December 26, 2012
Familiarity: I've put it through the wringer
The Deadbolt 18/ Thunderbolts from 4FRNT/Tyrolia/Head are the most rock solid pair of bindings a man can buy for $400. I rock them hard at 16 and they have yet to pre-release me into the scary terrain that I ride. I've even had a heel piece rip out of the ski before the binding agreed to let go of my boot. Now it is a little heavy because of its full metal construction, but hey, what binding that goes to 18 DIN is going to be as light as a feather? It is similar in weight to a pair of Look/Rossignol PX 18s that I have.
Bottom line: If you're set on going big instead of going home, get this binding.