Dell 5547 vs 5537 vs Lenovo z510 vs z5070 ( Architecture Student)

Hey

I'd like to know which out of the following would be best suitable for an architecture student using the following software - Revit, CAD, Sketchup, Vray, photoshop, Illustrator and Lumion

Laptops - Dell 5547, Dell 5537, Lenovo z510 and Lenovo 5070.

Regarding configuration, I was thinking Ci7(4th gen), 8gb RAM, 1TB HDD.

Do let me know your opinions and also do suggest similar and better laptops around the same budget.

Thanks in advance