Its hard to beat a good Labrador Retriever.  I have had labs for many years now.  All of them were excellent upland game bird hunters, excelled in water fowl hunting, and about the best friend and family dog you could ever want.  While dog hunting for deer with, or blood tracking them is illegal in my State I know my Labradors would do that.  Also while I don't think he actually hunted them but when he saw them, gave chase to squirrels then, the game was on.. he'd keep them in the trees and show you what tree they were in...  if you shot one and it fell into brush or tall grass, my Labrador would find the squirrel.  But for some reason I never knew why.. he would crush the heads of the squirrels.

As for a Brittney, I had one Brittney in my life. That was more then enough.   And she was a great hunting dog, but a terrible house dog.  For some reason, and I swear I never hit or was ruff with that dog, it would see men, including me, walk into the house and would squat and make a puddle.  Out in the field she behaved perfect with me.  Once back home, that dog avoided me like I had a stink.  My wife demanded the dog stay in the house, and after cleaning many spots...  I put my foot down and said enough!  She was sold as breeding stock to another Brittney owner as she was well papered..  and I purchased a yellow Labrador puppy for the wife.  We had that sweet girl for many years until cancer took her away from us.