I had a TM700 then I switched it to SD600, they are almost the same in the main parts, both 3Mos systems and produce the same video quality. I had some doubts before buying this SD90 but am pleasantly surprised. So I compare it to its big brother, the TM700/SD600, on a few key points: * Image quality: very similar, but you definitely see more noise on the SD90 at 1080p than on the TM700/SD600.* OIS (image stabilization): same, very effective but of course the longer zoom of the SD90 can give aβ¦