Dialed In 1000%. Played an Alien a couple times at Allentown/York and wasn't all that impressed. I am of the breed, however, that theme is not the most important thing in a pin. How a game plays, theme integration, and fun factor win it for me.
The Hobbit is a classic case of theme not making the difference (for me). I LOVE LOTR/Hobbit theme (and I think LOTR is one of the best pins ever made as well), but after owning The Hobbit and wanting to love it, it just wasn't fun to play to me, so off it went.
While the DI theme is not the most exciting theme to me, it has to be one of the most fun games I've ever played, and I can't get enough. I've never played a new game I've bought as obsessively as I've been playing DI. I've been waking up early every day just so I can play it before I go to work...and playing it almost all evening after work (between eating and spending time with my dogs ).
Again, to each their own...not bashing Alien, just adding my opinion to a thread asking for opinions