Do not use 1. I repeat, not 1. That is a horrible texture for such a large cliff. The weeds or whatever that is look horrible. Number 2 is horrific as well. Out of all three, #2 is the worst. 3 is where it's at.
Trust me, coming from a skinning stand point, number 3 is your best bet. #1 has nasty looking weeds growing on it, they just look too inflated. It also has a horrible seem that's blatantly obvious to see. #2 has grass growing on it showing that the picture was stretched beyond it's normal pixels. Trust me, the last picture is definitely they way you want to go.