Gg, I am looking forward to the advice you get, as most of the time mine are just labeled "Sugar Snap" on the packet. They are very good, cooked or raw (love them in a salad), very flavorful and tender if picked just when they start to thicken.
Sugar Ann sounds good, but I would like to find that quality in a plant that is taller. My pea fences are also 4 feet tall.