Please read this article, carefully. I have used electric collars for over 20 years with great results. It depends on what you need done and how much work you are willing to out into it.
Do not listen to the bleeding hearts who tell you how cruel it is and how much it hurts, read the ENTIRE article and then decide for yourself on what is best. The electric collar is one of the best training tools out there today. Good luck.
ADD: Mellisa, you have NO idea of what an electric collar is or how it works, why talk? I would be more then happy to have one on and have you push the button, I do it all the time. As a matter of fact, I insist that all people whom I train dogs for, HAVE to put it on, BEFORE their dogs wear it. If you have no idea and you are a bleeding heart, as you so put it, please, do not get involved in things you don’t have any experience in.