Second the small spade is my favorite to use because you can pick up multiple piles with out dropping the other. Second if anything gets stuck on the spade you can just clean it off on the grass or snow or leaves. You don't have to worry about any springs to break. Overall they are a great product.
Third is the rake scoop these are the same as the spade except the rake can get "stuff" in it and sometimes depending on the design it can be tough to get stuff off of it.
Let me know what ever thinks what do you prefer or do you prefer the good old fashion way of picking it by hand?