According to the stats, right at the back seems to where most people have the chance of surviving. Mind you, if a plane falls out of the sky at 500mph, you'll have no chance wherever your seated.

Last time Elsa and I flew to Manila, it was on one of KLM's old 777-200's ( now replaced with -300's) we had the last row of seats where there are only in 2 in a row, rather than 3, so theres a bit of space by the window and slightly longer legroom.