Turkens are a great dual-purpose chicken breed. Everything I have read says they do well in heat and cold, despite not having neck feathers, and they do go broody.
It is very difficult to not see the look of them, though. It is like buying a car with a missing door and just overlooking the missing door.
I am trying to be fair here.
Turkens do not lay as well as Leghorns. Turkens will lay about 200 eggs a year. I see 180 to 240 eggs a year. Maybe a really good laying Turken will lay as well as a poor laying Leghorn.
Based on my criteria, the Turken would be a good all-around chicken breed. They sure aren't pretty, though.
There are some breeds on the contenders list that lay eggs better than the Turken.