I am very happy with the leather quality on mine. It is not thin but being thicker doesn't mean that it's not supple, just that it won't wear out quickly. It didn't take much to turn the stirrups and keep them that way. A lot of the feedlot cowboys and ranch hands around here ride in Corrientes because they are good quality, won't break down under heavy work loads, and are comfortable for both horse and rider. Plus, if something does happen and it gets tore up (horse falls and breaks a tree, it gets a stirrup leather torn off, or any number of other things that can happen to a saddle that belongs to a working cowboy LOL), you're not out 3 months pay and it doesn't take an arm and a leg to replace it with one of equal quality.
Mine is a Modified Association tree, commonly called a ranch saddle. I got it because it's a bit more secure than other trees with the bigger swells and deeper/higher cantle. I ordered mine completely custom and the total price, including shipping, was like $687. Plus, it was on my doorstep 28 days from the time I ordered it.