Here are two ex-racers. One I own, (the chestnut) he is 20 years old, 16 hands tall and has been doing pony club/4H his whole non-racing life. He did up to 5', was trained to 1st level dressage, barrel racing, bareback, natural horsemanship, etc.
The fleabitten grey is 12 year old, 17 hands tall and has been showing 3' hunters. He has major dressage potential and is a beginners lesson horse.
Both are very sweet and calm. One of them, Bear (the grey), im buying this week. I have proof that one of them was abused (Junior, the chestnut) and we think that Bear was abused as well. Both of them are the only horses, that we have, we trust putting little kids/beginners on.
Here is a video of them:
Aubre (NordicJuniper), the rider, hasnt ridden a different horse for the last year (since she started riding Junior with me). She is very timid with new horses. She got right on Bear and walk/trot/canter and jumped him. He was perfect for her and did his best to take care of her.
I am biased to TBs, though I do like other breeds, but I think they get a bad rep thanks to people thinking that they are mean and hot headed. I myself, don't really like Arabs, I've always had more problems with Arabs (though I think it depends more on the horse itself), and I think they are more air-headed than TBs. That is just my opinion.
I think that if you don't like TBs, maybe you shouldnt get one..? But bond with a horse is more important then the breed. I find bonding with TBs is easier then bonding with other breeds; again, just my opinion.
Hope I don't get eaten alive for anything that I said, just my opinions. :]