Corey Christensenwrote a review of Dynafit TLT Speed Radical Binding on February 25, 2016
Familiarity: I've put it through the wringer
I've used these bindings for 2 seasons now. The work great and feel reliable but I've finally found out what it is I don't like about them. Pin height. Meaning the toe pins are 29mm from the ski surface and the heels are 45mm. That is a difference of 16mm.
This means that with my boot sole length of 297mm (TLT6 27.5), the bindings force an additional 3.1° of forward lean on top of the 15° my boots already have. This makes jumping from my alpine setup to my touring setup feel very different.
The these bindings force me into the back seat unless I change my stance from my downhill setup (Dalbello Krypton boots, Marker Griffon binding, Bluehouse Maestro ski) to something more exaggerated. A fix would be to put a riser under the toe piece, but that can only change it a bit. I eventually swapped out the heel pieces with a Plum Race 150 to get the ramp angle I wanted. I will miss the flipper heel risers though.
Google: Dynafit Pin Height Delta if you are curious about how they compare to other tech bindings.