At some point I am going to have to decide between these cameras before I lose my mind... I was planning on grabbing the Canon S2 but the image noise at low ISO's really threw me off. Im not going to pay 500$ for high noise at low ISO's. Not my idea of fun. I wasn't impressed with the images I saw either. Anyway, the cameras I listed have very clean low ISO's, and still have long zooms and video modes. However, I simply cannot decide and getting user feedback would be *huge*. What I am planning on doing is shooting around 900 photos and 2 hours of video this July/August in Montana (northern Yellowstone and Glacier National Park). Most of it will be camping, but a car will be nearby for a majority of the days, so that will be the source of charging, etc. I will need something that is reliable and that I can depend on. All of these look like gems, but they all have weaknesses (The Z2 seems to have the fewest weaknesses so far). They all have 10x optical So, requirements: 1. ability to add telephoto lense later on 2. good picture quality 3. decent video capture, zooming during a big plus The S5100 pros: 1.nice fuji color 2.fairly rugged build 3.14x zoom lense at 2 megapixel option without quality loss 4.crisp, clear video mode with good sound ,640x480 @30fps. Cannot zoom while recording, but you can adjust the zoom to place it where you want before recording (some cameras force your zoom to go flat) 5. uses AA batteries 6. AF lamp 7. looks kinda cool 8. RAW mode 9. 3.1 at teleophoto 10 comes with lense adapter, cover 11.low noise at low ISO's 12. bought new for 220$ thx to current rebate 13. fast for a digi cam s5100 cons: 1. that damn vignetting issue in top left corner 2. no zoom during video recording 3. limited compression options at 4mp 4. video mode only 14 minutes on one gig card C770 pros: 1. great image quality, well regarded in this area 2. 14x smart zoom option at 2 megapixels 3. plugging in external mic allows full zooming in movie mode 4. 30 minutes of movie recording on 512mb card (mpeg 4 640x480@30fps), good quality 5. many options for compression 6. huge amount of manual options and customizing 7. rugged metal build 8. small for a superzoom 9. low noise at 64 and 100 ISO 10. remote control C770 cons: 1. weak proprietary battery, 150 photos per battery. have to buy several backups for upcoming trip 2. no focus assist 3. focus will hunt in low light 4. slow to start up 5. 285$ 6. video quality not as sharp as s5100 7. Olympus seems like an "unfriendly" company, locking you out panorama mode if you dont buy their specific memory card Z2 pros: 1. good image quality if a bit soft 2. very fast camera 3. fast focus 4. very good video mode, 800x600 @15fps, 640x480@30 fps with sound and optical zooming 5. uses AA batteries 6. good manual options 7. 191$ new thx to current rebate 8. uses SD cards 9. lcd works in low light and bright sun 10. low noise at low ISO's z2 cons: 1. kinda plasticky 2. only 13 minutes of video on 1 gig card So there you have it. Thx for letting me vent about this whole thing. If anyone can offer insight or any tips that would be pretty cool.