You're right, Rainman about sometimes the simpler and therefore cheaper, the better. I've sometimes run into the problem of the clamps either not being the right size or orientation for where I want to put the blinkie. ie: on the seat stay as opposed to one designed for the seatpost where it would be hidden by my rack bag. Usually there are enough clamps, clips etc. hanging around from items that have got lost or broken that it's not a problem. The only thing I've found with AAA batteries is that they don't have the life of AA's.