Have you watched Bowen's tutorial videos on papa.org/blog for these games? I think there is a video for each one of the games in your list - at a minimum there is a tournament video. He does a great job of showing off the games' features, strategy, etc.

The strategy is vastly different between these games and could be something you really don't like. Iron Man can be pretty difficult but if you're a good shot, you might really dig it. LOTR gameplay is very diverse -- lots to choose from.

I disagree a bit here because of Tron. Tron is more of the combo shot game with that left flipper.

ACDC bored me to death and I sold it quick because of the strategy and lack of 'modes'. The songs are probably considered modes but they are really uneventful. The strategy seems to be all or nothing, stack a bunch and go for the jackpot. Again check out Bowens videos - he has a good one for ACDC with the latest software.