The first horse is pretty green. She is on her forehand.. and the reason they show no lead changes is because she is too on her fore hand to do them. She jumps like a green horse. She also has pretty light hocks for dressage and she does paddle with her right front leg.
The second horse is MUCH nicer. Much more power.. but from the still shot I would really check her feet. Also from the still shot in the pasture she appears slightly back at the knee. I would love horse #2 for dressage but am not sure I like those front legs enough for jumping.. and her feet look very very short.. almost soft and thin walled (but you cannot tell without looking at them).
Both horses need to be seen in person. If the first one is from a bad dealer I would ask for references (may or may not help). Maybe not even go see her. The second horse is worth a look.