In general the sheer friendliness of the people involved. I had my first competition this weekend and it was really nice to see people helping eachother to get faster or to learn new stuff. Also, being a newbie, people were super helpful in getting me set up. I even got to shake Ron van Bruchem's hand and had a couple of chats with him. What a great guy. Same goes to all the other organisers. I was super impressed. All in all, friendly and helpful people.