I am looking to get an Electric Toothbrush but since many of these toothbrushes are costly I would like to know which one is the better one to get. I looked at Dr Bramans, Sonic Guard, Sonicare and Oral-B. My question is are they all the same? Should I just get the cheaper of the one or is one better then the other? Which is the best for the buck. Does any last longer? I would love to hear reviews or opinions on picking the best toothbrush.