Crafted by some French lads that also make aviation parts.
The design is simple but strong. They do what they have to do and you can trust them, in any kind of terrain. I ski everything from groomers to steeps and race through crud and pillows with them. Never had any problems and I never lock out the toes to prevent pre release, they dont do that.
Turn the heel piece with your pole, the little tower has holes placed so you can always find a hole and rotate 90 degrees to switch between riser heights or ski mode, really smart design. The holes are pretty small though, you'll need some time to get used to.
I ski them with leashes. Plum also makes brakes for them but those are suicide brakes, forward facing. I dont use those because I dont like the chance of breaking stuff in the BC.
Yaks have a wider drilling patern, check with the manufacturer of your ski if the binding reinforcement is wide enough.
The toe pieces of the Yak sit a little higher than their other models Because of that your ramp angle will be less steep. If you dont like that get the Guides or Races.
You can use standard Dynafit crampons on all Plums but if you want them to bite with the Yaks you'll need to add a spacer on the crampons that fills the space between your ski boot and campon so it goes down all the way.
Yaks have a fixed heel pad. For the Guide you can get them separately. Heel pads protect the heel pins when landing jumps etc. Please note that the heel pad could interfere when your heels try to release in a fall. No biggie but be aware.
There are a lot of new tech touring bindings out there. All with their own gimmicks and extra moving parts that could brake. Plums realy are no-nonsense bombproof tech touring bindings. They'll get you up and down carefree, whatever you throw at them.
I'll only buy new tech bindings when they are as bombproof as these and have some real advantages over these.