I am using the lug nuts you need a key for, and I must say I love them and hate them at the same time. The reason for loving them is simple, added security. Reason for hating them, when you need to take a wheel off and you don't have the key on you. Almost everyone I know keeps them in the safest place they know so they won't lose them, that place is at home, usually with the tools. It sucks how many times I end up needing it and then realizing, "hhey wetard, key no wit u." Then you do the epic troll face and want to cry since now you have to wait to do what is needed.