Which graphics card should I pick?

[FallenWarrior]

The time has come for me to invest in a new graphics card, I currently have a GTX 560 Ti. I was going to go with the Gigabyte GTX 760 4GB OC card. But since the store I ordered it from just changed their status to not selling it anymore (previously their status was orderable).

So the new cards I'm looking at (higher price range) is ASUS GeForce GTX 770 4GB DirectCU II OC and Gigabyte GeForce GTX 780 GHZ Edition 3GB.

 

Some advice about which card to go for would be much appreciated.

 

[Slammer64]

Go for the 4 Gig version, more memory is never bad. 

[FallenWarrior]

Go for the 4 Gig version, more memory is never bad. 

 

I'm kinda leaning towards the 4 Gig version myself, not only because it's a bit cheaper but it doesn't have as high power consumption as the 780 version (not that my computer can't handle a higher power consumption, currently have a 750W PSU). However I've never used an ASUS card card before, I always went with Gigabyte.

 

Edit: I finally decided on the 4 Gig version. I just hope it doesn't break my planned budget.