Please help me to choose a best laptop?

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Hi Guys,Please help me choose the best on from these three or suggest any other if you have in mind. 1) Dell Studio - S510802SG 2) Lenevo Idea Y450 and 3) Acer Timeline model 4810T My Requirements: 1) Price around $1000 2) Should run 3d software like UG and CATIA 3) Should be okay for Games ( may not be perfect but still okay) 4) Office tools... Please help me guys..I need to buy or at-least book one by Monday.... Thanks