There are so many conspiracy theories on offer, it's hard to pick one to support. LBJ did it, CIA bumped him off. The Mob conspired with the FBI etc etc..... bit of a pick 'n' mix conspiracy selection.
I'll go with my original conclusion...Oswald did it. I haven't been persuaded to change my opinion, by anything on here, old or new. Some things make me have a slight rethink like the Mac Wallace fingerprint or one or two discrepancies but there is so much disinformation or vested interest by the parties or lack of corroboration, that I'm not convinced enough to reconsider.