Agree - sometimes if the liners are too big they will 90% of the time do this; or at least this has been my experience. My problem with liners though is that I find these REALLY cute patterns but once the cupcakes come out of the oven you can barely see the pattern! Must be something to do with oil in the batter absorbing into the liner?

As for getting even cupcakes I agree that the ice cream scoop or the icing bag would work the best to get the nice even levels.
