initially I like the brown mare as I prefer that color and like her chrome, looks to have substance. I do see a bump on her front but my gelding has something like that and it's a calcification from an old injury that has no effect on him, sounds like her is cosmetic only. I do think she's cow hocked, has a hump in her loin area that doesn't quite look like a roach but something with her spine that I would have checked out, narrow through the chest and a rather large head for her body. If she's a mustang then that's ok because it's breed appropriate and with her feathering and bone I am thinking she might be a mustang. I do like her shoulder, hip depth and legs. SO even with those flaws I think I'm still going to go with the brown. Not sure she's breeding quality but again, the photos don't do her justice and she's in baby shape which is not always flattering.