Next month I'll be ordering a D3s which means I need to buy a new wide angle too. I've been shooting with the 17-55 on my D300 and I love it, but I do wish it was a little wider. My choices are down to these two lenses. Since the 17-55 is really more like 24/25 on the wide end(on the D300) the 24-70 makes the most sense as that is basically the range I've been shooting for a long time. But when I pop that 24 on my D300 then I'm really losing the wide end. On the other hand I like the idea of the 17-35 because of how wide it is(and will still be wide on the D300). But the older 17-35 probably doesn't have the IQ and as fast of focus the 24-70 does. Keep in mind I am a photojournalist so a lot of my time is spent up close to people shooting wide and shooting in tight areas. I'll be using both bodies and it would be nice to switch my wide and 70-200 between cameras without losing too much range. Another point for the 17-35 I guess. Anyway, what are your experiences with the lenses if you have any?