Ended up going with this one - it's on the way.
Liked the ATI version of that Gigabyte one you got, Highwind, but my case wouldn't accommodate the extra length. Yes, I considered taking a die grinder to my drive cage to make the room, but decided against it. Plus it can apparently be easily modded (flip a switch) to unlock / overclock to a 6970, and 2GB of RAM should take care of textures for the next generation of games. Time will tell.