These two gooding
15.6"
MSi
GE60-2OE, i7-4700MQ + Nvidia GTX765M + (1920x1080; anti-glare)@RM4299,8GB, 750GB(7200rpm), W8, backlit keyboard
GE60-ONC, i5-3230M + Nvidia GTX675M + (1920x1080; anti-glare)@RM3299, 4GB, 750GB(7200rpm), W8

Prices in RRP, negotiable.
Either get the 1st one directly.

Or get the 2nd one and use the remaining budget to upgrade RAM to 8GB and HDD to SSD (should be able to get 256GB for remaining budget) 

For gaming, prefer better GPU.
The GPU is greater than GT740M..

The GE40 is fine. Even if you don't repaste it (which helps, but is not essential). just turn off Turbo Boost - you don't really need it much. You get a 760 + i7 + great battery life for below 4k (3.7k street price). Add another 8GB RAM or 128 SSD and you're all set for 4k.

Alternatively the Illegear RE15 - but mind the "static in speakers" issue now being brought up by some of the users.

The GE60... well... UNLESS you need Full HD and 15', IMHO the GE40 is better as the GE60 GETS HOT ANYWAY and has worse battery life, especially the 765 version. The display is better looking on the GE60 however.

As for 765 vs 675, they are for all intents and purposes, nearly equal.

Then why not the Illegear RE15 or the GS70? IINM the GS70 has a better screen and both have about the same temps and battery life anyway - unfortunately it's slighty out of 4k.

The GE60 is fine... just that battery life is A BIT on the horrible side because it actually has a smaller battery than the GE40 + bigger screen + more powerful components.