Personally, I think yildiz are a good value. My teens use them on the 4H clays team. They havnt given them any issues whatsoever. We have both over/under and semi auto versions. They've gone through a lot of ammo with them and they have been reliable and had no issues during tournaments. They fit them well. Ours are youth models.
However, be aware these are not expensive guns and, in my opinion, for a long terms thing, there are better options available for fit and finish. I'd probably lean toward a used gun of higher quality myself. We use them for the kids because I don't feel like going through high end guns in case they lose the desire or out grow them. So, in summary, I think they are fine but I think there are nicer options for not much more in the used market. For instance, I picked up a used Ithaca SKB in perfect shape for $800 at a gun show, I prefer it.
And I have killed a ton of birds with our Yildiz O/U.
Houston-BCS-Austin-Dallas-San Antonio - Infinity Roofing - https://linqapp.com/jason_duke --- JasonDuke@InfinityRoofer.com --- https://infinityrooferjason.blogspot.com/