Few questions. I was going to buy a Canon SD 870is till I saw the new 880 comign out. I liked that it had a little more optical zoom (4.0 vs 3.8 which I thought was really a selling point for me) for basically the same price and I REALLY wanted a 3" LCD instead of 2.5". So it was worth it. Then as I was lookin at the specs. It shoots video in .mov isntead of .avi like the 870. The 890 shoots in .avi as well it also has 5x zoom which is awesome, but still has the 2.5" screen. I can get all of them for $300 +- $20 So basically I have 2 questions. Is there really any downside to shooting video in .mov over .avi (it can obviously be converted later)? If the answer is none. Then the second question is do you think the 5x on the 890 over the 4x zoom on the 880 is worth stepping down to the the 2.5" screen? On my old sd300 with the 2.5" some pics looked great on there but looked fuzzy blown up and i was hopin the larger screen would help alleviate that. Any input would be great. I'm don't know a lot about cameras. Here's a link where you can compare features. http://www.usa.canon.com/consumer/controller?act=ProductCatIndexAct&fcategoryid=113 Then in the upper right "choose the right product" then "product comparison"