No way you could play through Deus Ex that fast. It's like an 80 hour game!
Deus Ex was over three days with CIV 3 breaks here and there. You figure 6-9 hours each day, and thats about 23 hours. Semi in-depth. (I read about half the e-mails, books, and newspapers, most of the sidequests, etc). And if you rush Deus Ex, your killing it. You can't rush this game and have it be good.
Also, which ending did you guys choose?
EDIT: Let me re-phrase: What ending do you guys support the most? (I think everyone has done all three endings at some point. I sure don't play the entire game over again just to have the same ending)
I think the illuminati ending was the best. Of course, there are some times when I just say "screw you all, I'm blowing this place up".