I personally don't think either of those two mares are worth their asking prices. The chestnut- as everyone else has said- seems unfinished, antsy at the halt, and she's not doing a true four beat walk. Her rider is obviously being jostled a bit in the first video.
The black mare has a few faults too. First, I do not like her connection to the bit at all. She definitely seems to be the type to move her head a lot as she is ridden, and she seems to both ignore some of the man's cues (you can see that he has to encourage her quite often to keep her pace) and be a bit nervouse/spooky. She spooked a little bit atleast once in the video.
If you're wanting a horse that doesnt spook, and you're giving up and selling the one you have had, I would say don't give the black mare a second thought UNLESS you're willing to help her along, and possibly finish her training as she still seems to elude the bit and leg cues more than she should. The chestnut depends. I definitely would NOT pay 4,500. I also live in Texas, and I wouldnt pay much more than $2000 for her. She's a nice little mare, but she still needs a lot of work.
It also depends on if you're wanting a TWH specifically for their gait on if you should go ahead and purchase one of the two. They arent BAD horses, just not the definition of 'nice.' Have you seen them go through their other gaits also? Surely you wont ALWAYS want to go at that exact pace, wherever you go =] your decision should depend a lot on the choppiness and the figure of their other paces.
Good luck, and I'd personally say keep looking. You can find horses just as good as those two for less, or a better one for about the same price.
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