I believe there will be more price drops or more free game packs, since you aren't in a hurry just keep your eye out on the specials and grab the best card you can afford.
The 7970 would be the one that may get the best discount as the 280x is replacing it.
I believe it is worth the extra $90, the 770 will last you longer, perform better with more demanding games and higher resolutions, it plays anything you throw at it, don't get me wrong the 760 is a good card , but the 770 is a "great" card.
I also will be getting it after christmas so prices may go down. how much do you think they'll go down? Also, how much do you think the r9 280x will go down?
I believe there will be more price drops or more free game packs, since you aren't in a hurry just keep your eye out on the specials and grab the best card you can afford.
The 7970 would be the one that may get the best discount as the 280x is replacing it.