I have decided that my 24-70 is a bit restricting on my D300. I just got back from Hawaii, and I found myself only using my 18-200 and 12-24. I had always planned on going to a full frame body, hence why I purchased the 24-70. I am now wondering whether I should go ahead and upgrade to a D700, and replace my DX wide angle as well, or if I should just sell off the 24-70 and get a 17-55. Obviously going to FX is what is usually the goal, however I am wondering if it's worth the $2400 for the D700 and the $1800 for the 14-24 rather than just switching for the 17-55. The higher ISO performance would have come in very handy at the luau but shooting in low lighting is not something I do often. D700 + 14-24 + 24-70 or D300 + 12-24 + 17-55? (I know, the choice seems obvious. I'm just looking for some outside feedback).