I like Annie over Lucky. Annie seems to have a much stronger foundation than Lucky. Considering their ages, I think Annie's a better deal. BUT, there's something about Annie's trot that looks a little wonky. I think the rider needs to ask her to take a bigger step, she seems balled up. Could also be her feet, her weight seems to be going into her toe.
Glad you decided against the first two. The grey seemed strong through his neck, (in a bad way) and I've never seen a rated hunter advertised as having a 7/10 temperament.