I use 'em at work all day. If you have the right crimper, they are a snap to use, although pricey. They are gonna get bulky in a hurry too and there is no smushing 'em tightly together like a big gob of bullet collectors. Also, how many tiny little parts are needed just to make one connection?...lots I could see using them on something that is gonna get disconnected and reconnected frequently. They are great for that.