I've just replaced my 840k Toucam with the 900NC. Cost $110 here but I believe they sell for about US$50 over there. I've only had a limited chance to use it so far (too much rain), but the first results suggest that the individual frames are smoother, less noisy and can be pushed further in processing without becoming grainy. You will need a new adapter. W900NC-F from Steven Mogg will cost about $20.
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