I agree there are good ones from both types. My preference is full blood as stated from above for the consistency.
If you find your full blood strain not being consistent its time to check the quality of your blood or your culling methods.
x2 on the culling methods for sure...that is where the majority fail...
Don't forget about training methods, operator error has ruined a good percentage of pups
Yep I will agree that also has a big part as well. But can't put the cart before the horse.