me and a some of my friends have a few of the 780is and the 1400is. both work great. macro is sharp. video im not sure on the 1400is for concert settings [audio recording quality but im pretty sure it should be good if predecessor is good]
the one downside i saw on the 1400is was that the zoom was not around the shutter release button, its to the side. check out pictures and u should see what i mean.
for p&s, the MP different has quite a difference. not too much for DSLRs due to the sensor size. but the zoom is something id definately consider. 3x isnt much. havent a little more reach in optical zoom will help in some cases.
Pr0j3cT TuX3d0 | The Cooler Master 690 ClubNikon D800E (Nikkor AF-S 14-24mm f/2.8G IF-ED | Nikkor AF-S 24-70mm f/2.8G IF-ED | Speedlight SB-800 | TimBuk2 Snoop Camera | Zeikos ZE-NBGD800 Battery Grip | BlackRapid RS-Sport) | Flickr