I would personally choose orps for their single comb, size, temperament, egg production and weather tolerable. Exhibition stock is massive compared to average backyard stock and absolutely gorgeous to watch in the yard.
Yes I am biased but then again I raise orpingtons in both LF and bantams.
1. They are very hardy in cold and hot temps.
2. Less people are working with them.
3. And personally I've never have cared for Orps because they have to the meanest chickens I have ever owned.