If you are willing to feed and restock fish every couple years, IMO nothing beats a HBG/CC/HSB combination in a small pond. Fast growth rates, high turn over so fish generally don't get too hook shy, no chance of stunting or over population. All species are excellent table fair. There is the chance for a decent trophy fish and some good fight from all species. The key with this combo is the willingness to feed your fish and to restock fish every couple of years. All three species are readily available and fairly cheap from hatcheries in your area.