I have a PMU rescued mare and my experience has been fine. She is beautiful and turning out to be a really nice horse. She is definitely a "mutt"- belgian/ percheron/ mustang and quarter horse but she is beautiful and has great legs and feet. She is pregnant due to foal in May. I just got her a month ago from the Animali Farm. They place these horses. Most of them are not cheap because the cost of transporting them from Canada is included. In my case she was transported 4000 miles from Alberta to Florida. She arrived fat and healthy. Though shy when I first got her she is now following me around, eating out of my hand, haltering, leading and today we trimmed her feet for the first time without a problem. The horses, for the most part, that come from these farms aren't necessarily abused but they just are handled in herds like cows would be. Therefore, they aren't too trusting of people. Anyway I highly recommend taking a chance a getting one of these horses- just make sure it's with a reputable agency like Animali. It is very rewarding. :)
Horses are good for the soul.