I have the Speedlock Pro Super Light plate with VPM412 bindings. The numbers refer to the DIN range, so between 4-12. Similarly the V 614, V 816 and V1018 have a different DIN range. After the V the next couple of letters may designate the color of the binding (back, black/white, red/white) on some models. You can also order color covers for the bindings. Also, you can order the bindings flat if you don't want/need a plate.
The Speedcom plate takes a different binding, the VSP 412 or 311. Those are not available flat. The Speedcom bindings are GW compatible. Important to keep in mind, the bindings that work with Speedlock plates are not GW compatible.
When ordering with Blossom skis, the Vist bindings are branded Blossom. At least mine came that way.
If you want the complete Vist info here it is:
I've only had a few days on my AM77's, however so far I really like the bindings, they feel very solid and they are easy to step into and out of. Easily as good if not better than my Attack 13's.