Background: I have 3 dogs, a 6yo DD, a 2yo PP, and a 12yo shepherd mutt. Bird hunt maybe 60-70 days a year, all wild birds (prairie grouse/forest grouse/phez/SW quail).
Sharpness: If I had to leave a dog around my 3yo niece, it would be the DD hands down. The most gentle and forgiving dog I've ever seen. That being said, there are DDs out there that I wouldn't trust around adults, let alone kids. And there are DDs that in all honestly should be put down they are so aggressive imho. And some of those same dogs are being bred. Pick your breeder carefully.
Hunt: She's a VC and is truly the best pheasant dog I've ever hunted behind. She is close-medium worker, perfect for the Western MN and Eastern Dakota pieces I hunt. She has an uncanny ability to pinch pressured birds. She is terrible in hot weather, perfect hunt temp around 10-15F. A good waterfowl retriever and tenacious after the shot. Tracking abilities are legit. Takes very loose hand signals, but pales compared to a good lab.
Around home: The first couple years were rough, she was a lot to handle. But that's most sporting dogs. She's calmed down very nicely, and is a lazy lazy dog. Except when she thinks a trip is coming up, then she is annoying as hell as she lays blocking the front door. She rarely gets left behind, but is always worried about it.
If you want to see some work, below is my youtube channel. Lena is the DD, Lido is the PP. You might be able to see some differences.
MissedAgain Youtube