The Yildiz I tried didn't really have enough drop for me. The Spartan is decent, but was short of pull length. Adding a recoil pad to it fixed that. To me, my little 20 gauge Spartan fits better than the Yildiz did. Fit and handling and weight bias is an individual preference thing way I see it. As tools, the Yildiz may be better than the Spartan if it fits YOU better. I think they're good guns, just don't consider 'em any better built, maybe better fit and finished, but not better built than my Spartan. The stock overlaps on the Spartan a bit, the checkering looks pressed, the wood is bland, there's no engraving or adornment, but it fits and shoots just fine. It'll never win a beauty contest, but that ain't what matters to me in the field. My Mossberg 500 is pretty danged ugly, too. LOL Kinda like the camo finish, though.
Check out the Yildiz. You may prefer the fit. The finish is easier on the eyes. I think they're good guns, not running 'em down, I just don't think they're "a lot better" than the Spartan as a hunting tool. Just ain't so. I'd give the nod to the Spartan for strength. Actually seems a little over-built. I don't think I'd wear either one of 'em out in MY lifetime, though. Of course, at 55, I ain't got all THAT much lifetime left, I guess.