There seems to be two very distinct preferences of Hi Power hammers (well, for the most part, that's all we have to choose from, so it DOES make sense!), and for myself, I like the looks and have become accustomed to the feel of the round hammer. Admittedly, when handling a gun with the heavier spring, the round hammer might be a little harder to manipulate, but it is still my preference. I have guns with both types, but the round hammer style is more aesthetic to me, and that is my major reason for the choice. How do you feel about it? Does it matter to you? Is it based on performance, looks, or something else?