I think all chickens have their own personality and health problems. You could get a orpington and have a crop problem or you could get a super sweet and friendly healthy orpington. You could get a mean maran, brahma or susex or one that had crop problems. I have never had an issue with any of my chickens except one and it was a easter egger it went broody and got very aggressive. I think whatever chickens you get you will love!