Is it worth it to go with the 780 over the 770 at this point in the game? please include reasons why. I'm debating between the two. Is the 15% performance difference really worth it from the 780? That's not going to be game breaking on anything and if it is, then the card will be long in the tooth by that time and need an upgrade anyway. I dunno if it's worth the extra $250 for just a 15% gain... am I missing something?