I've had one for years. It is a three horse. Works wonderfully, although the ramp still freaks me out. The only problem I've had is the electrics and still no solution. Here is his website. http://miniaturehorsehaulersbybob.com/
We have had one for 7 to 10 yrs no problems except that we are having to take off the top and change the wood in the roof. Even though we would seal the roof every year it leaked and now the wood rotted. I will say he now has the option of an aluminum roof. I would recommend that. When we change our roof this fall we are going to get either aluminum or trex wood that will not rott. Other wise it is a great hauler. I has only had one horse that hauled bad in it and that was because she didnt like to tie. Now she hauls in it fine. I have hauled horses up to 37 inches in our 4 horse hauler and a mare that was 10 months and very pregant. And she had more than enough room.
If you have any other questions feel free to pm me privately.