there are several sites where you can find some information about hg10 camcrder, search some of them at Google, as i know dpreview.com is an ainformational sites and you can see on this sites too...
Canon hg10
The average price of a Canon HG10 is between $700 and $800.
well hg20 is better than it since it came out after hg10 so its most likely more advanced
It's an overall nicely put together pro-sumer (not quite professional, not quite consumer) camcorder. The decision reallyl lies in two things. Do you want to be able to shoot in slow-motion, and what editing system are you using? The HG10 is not capable of slow-motion capture, and it is generally incompatible with iMovie and Windows Movie Maker.
It depends on your needs. Look at your price range, look at what's available, and then compare them directly. Overall, the Canon HG10 in best bang for the least buck, but the Sony cameras are by far much higher quality if you're willing to spend some extra cash. If you want to go really cheap, the flip MinoHD might be for you. It's easy to use, high quality, and only $149.99.
There are many great camcorder models available from Sony, Panasonic, JVC etc. Many sites offer reviews on camcorders, I personally like Cnet.com as they have reviews and recommendations for various models for different price ranges. It depends on your needs. Look at your price range, look at what's available, and then compare them directly. Overall, my vote goes to the Canon HG10 in best bang for the least buck, but the Sony cameras are by far much higher quality if you're willing to spend some extra cash. If you want to go really cheap, the flip MinoHD might be for you. It's easy to use, high quality, and only $149.99.
A good place to find reviews of specific cameras (and other tech stuff) is www.cnet.com; they may not have every model you are looking at reviewed, but it's a good place to start! We cannot recommend specific brands on this site as that could be construed as "advertising". Which camera works best for one person will be a complete piece of junk to another, even if it is the identical brand, so there is no real way to state without any discord which camera is best or better than the other. The best thing to do is try to rent these, one at a time, and try out all their features before you actually purchase one. Or compare them using one of the many resource publications or internet sites and looking at performance and reliability issues with each one. Most reviews today indicate that in terms of quality, AVCHD has achieved image quality comparable with HDV. Consequently, HF100 seems as good as HV30 and, apparently better than HG10. There are many arguments in favor of SDHC card-based camcorder over a MiniDV tape-based one. SHDC cards can be had for $25 for 8GB these days (Aug 08), and will continue to drop. SDHC seems to be the future. Since HF100 is less expensive than HV30, this would be my choice.
Some video cameras have a file size limit of 4GB. The answer will also depend on what type of video you are recording. Standard video (TV resolution) will require much less memory. The various HD video formats will require much more. Another wikianswer indicates that a 2GB card can hold two hours of video. But it gives no indication of the video format. Casio claims 9 minutes 11 seconds per GB for their Exilim Pro Ex F1. So an 8GB card could hold 73 minutes 28 seconds of HD video. But it would need to be split into two or more files.