I've been more than happy with any of the turkish shotguns i have had/used. I don't shoot 1000's of rounds of clays with them, i don't expect them to last as long as a B gun, etc, but for my intended purpose they are great.
The pro for me are:
The aluminum receivers are lighter, so for someone who mostly works a desk job, isn't quite as young/fit as i used to be and who tends to do more "walking around with a shotgun" than actual shooting the weight is a plus for sure.
The turkish guns have a much better availability with shorter barrels. Late season rabbit hunting, busting through thick stuff looking for hares having a 18-20"ish barrel makes it much easier twisting through alders and spruce thickets. This isn't as relevant for wingshooting, but it fits the bill for bunnies.
The price is better, so i am more able to have more than one for specific types on hunting i do, 12ga longer barrel for ducks, 20ga longer barrel for grouse, 20ga short barrel for rabbit and any other configuration that catches my fancy. We're a group of people who like guns, so there's going to be some we get just because we like they way it looks or feels, so the price point is a plus for that.
They just plain shoot well for me. This one is going to vary person to person, but i've been lucky in that any of the turkish guns i have used just seem to fit me perfectly and i end up shooting better than with other non turkish guns i have used and only one single problem with a trigger group that was quickly replaced and have had no problems with it since. I personally don't care if it's a bit ugly and the wood/metal line isn't seamless as long as it works.
The caveat to all of this is that most of the turkish guns i have used have been either from Corwin arms (who either seemed to do a better job at QCing them before he sent them out, or paid for better QC) weatherby or lately charles daly. They're also fairly low round counts and i can't realistically expect that to last for 100 years and get passed on to my grandchildren, but as long as i'm going into it with a realistic expectation i don't see why it matters. A honda civic gets me to work just the same as a BMW if i have other things to spend my money on than a fancy car.
I know there's a ton of different brands/models/manufacturers/QC levels out there, so you need to make sure you're buying from somewhere reputable who will stand behind what they sell, or do your homework on the particular gun you're looking at.