For everyone out there that thinks Red John is 'many,' it does not matter. Jane wants the person who killed his wife and daughter, which is only one person. He will probably bring Red John's associates to justice. If Red John consists of multiple people, then I would want to know the one person who killed his family more than the multiple people that make up Red John.
Think it hurts me, but according to me, and the indications found during all these seasons, lets me think that he is the suspect number 1, together with Brett Pattridge. Red John and Jane is so much alike... I am afraid I do not hide it.. I became attached to Jane, and that me Shall hamper enormously that is him.
PS : Sorry for my poor English, I'M french so.. It's difficult for me ^-^