IM by a mile.....but I'm not a big fan a games with a giant bash toy halfway up the playfield that never gets out of the way......feels like a waste of space to me and is always annoying.
IM is one of my all time favorites.....but I'm a gluten for punishment.
P.S. IM is way more brutal than AC/DC or TWD......for me. Getting to Jericho or DoD Hurry up vs. AC/DC's or TWD's wizard modes is not my barometer.......ball times are. I have two games ever over 10 minutes on IM (zero over 15).