I'd avoid Marker bindings outside of the Royal Family series. A good friend skied on a pair of the M 12 Frees and had nothing but trouble with pre releasing during awkward falls and breaks getting messed up.
MUCH better, they're a bit heavy, but are more durable. And at 5' 8" 150, a 14 DIN will be fine (that's right around where I am and I'm getting Look Pivot 14), but I wouldn't look at bindings with a higher DIN than 14.
I sued to have the marker 12 eps (same as the 12 free but w/out the rubber pad) and they were great. I had no trouble at all with them. I want to try them again. I thought they were great bindings. You can enver go wrong with px series though.
Bonzai_Warrior "haha holy shit dood...shes def. showing how many fingers she uses to play with herself"