If you care at all about story, I'd strongly recommend purchasing both games rather than one or the other. They're both good in themselves as far as gameplay is concerned, but the narrative is basically a single story that just cuts out half way through. If you want any answers at all to the mysteries raised in the first part, you'll need to play the second as well, and the bundle price is much better value than the price of each individual game (though still a bit steep, honestly).

Me too, and strange thing is, that there is not a bundle with both games AND both soundtracks.