Looking for budget gaming laptop so i figure i need some advice from sifus

1. Preferred brand - None
2. Budget - 3k-5k
3. Usage - Mostly gaming, engineering software, uni assignment and programming stuff (visual studio)
4. Prefer - gtx960m

Currently i have dell 7559 and lenovo y700 in my mind but can't really decide between this two. Any laptops that has similar or better specs other than these two also fine.
Thanks in advance!

Woah 400 extra only. I thought alienware around 6k something. Nway, if i have to lower the budget a bit. Lets say to 4.5k. Which laptop would be best for me?

If that's the case I think I'm going for dell. Extra money from that I can use for other stuffs. Hehe thank you!