I love them both very, very much, but in different ways. It may sound trite, but I don't mean for it to - Chickens are chickens. Turkeys are turkeys. They are very different birds and each bird inside each category has a very different personality.
Some domestic turkeys apparently are not the sharpest tools in the box, but my heritage bronzes are very intelligent birds. They are quiet and gentle. My bronze turkey tom actually raised two orphan guineas by himself. I have pictures of them under his wings on the roost at night.
Contrary to popular belief, turkey poults are not so dumb that they turn their heads up in the rain and drown themselves. It is simply that they get chilled very easily and die. So the warmth factor is something to consider.
My chickens often make me laugh out loud. My turkeys command my respect. My heritage bronze hen is the best mother I have on this property.
What more can I say that hasn't already been said? I stand in awe of the turkey - most especially the wild turkey.
As far as turkeys with little ones.... I had a turkey tom that threw his feet at my young grandson (they were about the same height). But my grandson got right in front of him in a challenging position, so it wasn't the turkey's fault. As with any creature on the farm, when little people are around, it's a good idea to keep an eye on what is going on.
FYI, a raccoon will bite the head off of a roosting turkey. So I put mine up in pens at night. That may be something to think about. They will roost high up in the trees if they can, but just because they're big doesn't mean they aren't vulnerable to predators. A friend's rottweiler hung out with him and his turkey boy all the time. They were all friends. Until one day when John went to town and accidentally left the turkey out. He was a pile of feathers when John got home and the dog was covered with blood and feathers. Just a thought to think on. Things are not always what they seem. I have to keep my tom away from Australian Shepherd. They don't like each other at all!
Good luck to you if you decide turkeys are a thing you want to try. Let us know how it goes.