Deus Ex 3 is certainly the kind of game that will impress you based on it's gameplay and story rather than graphics. I'm sure you'd find yourself liking it as much as Obliviou and Fallout 3.
Hm. Well, it looks like I'll have to add one more game to my list. Damn. There's way too many that I want already, so I was kinda hoping that this would be a disappointment. I've actually never played a Deus Ex game before, but after hearing so many people get hyped for it, I checked out the CGI trailer, which looked gorgeous, and then I saw some gameplay, which, in comparison with the CGI trailer, looked pretty bad. However, for games like this, looks can be deceiving. Other examples are Fallout and Oblivion. Fallout 3 had no ADS, which I hated, and Oblivion's first-person sword combat looked weird, but after hearing everyone say how good they were, I got them and loved them both.UnchartedZone