http://www.amazon.com/HQRP-Adapter-CA-570K-replacement-Carrying/dp/B000FFT632
http://www.google.com/products?hl=en&safe=off&q=CA-570K&scoring=p
References :

Sony has 15X better optical zoom
Canon has 7mm more filter size
Sony has better Wide Focal Length
Canon has better Manual Focus controls
Canon Has Audio-In, Sony does not

Personally, I would go with the Canon if you are not going to be needing distance shots (like nature shots), but if you are, then Sony will be the winner, for it has better optical zoom. (Digital zoom is worthless, all it does in increase pixel size, cutting quality big time)
If you need anymore help, email my profile. The links for the specs of the cameras are below.

Hope this helps,
Randall
References :
SONY
http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=11035910

Canon
http://usa.canon.com/app/html/HDV/HV10/specifications.shtml

The camcorder I have is Panasonic PV-GS 320 which has 3ccd.( Excellent color). (MiniDV tape)

If I had another chance I would probably go for Sony DCR-HC96 (MiniDV tape)
References :

1) MiniDV tape does not compress like the hard drive or flash memory camcorders, so video quality even up against the high def or flash memory camcorders.

2) When you fill the miniDV tape, pop it out, lock it, pop in another – not only does that tape become the archive (with a good shelf life), but you can shoot for as long as you have (cheap) extra tapes. At around $3 for an hour, they are affordable. When you fill up the hard drive or (expensive) flash memory), what do you do? When you transfer the hard drive video to your computer, you delete the camcorder video files. If you do not back up those files to an external drive or data DVD, when the project is done being edited, you will delete the video files – so… gone from the computer and gone from the camcorder… gone forever.

The Aiptek lenses are too small to provide any sort of good quality unless you are very close to your subject – and their mics are not very good.

3) I am not aware of a Canon miniDV HV10. The HG10 is hard drive based and uses AVCHD for high-def compression – You do NOT want this camcorder. If you mean the HV20 (or HV30), then I would say go this route.
* As stated earlier: MiniDV tape. DV and HDV are the least amount of compression and results in best available video quality.
* Mic-in jack – you may not want it now, but an external mic is REALLY handy. Better to have the mic in jack and not need it than need it and not have one.
* Manual audio control – I did not check the JVC, but NONE of the camcorders on your list has manual audio control except this one. This is REALLY important if you are in really loud (rock/hiphop/whatever amplified music bands) or really soft environments (you get the characteristc whooshing sound from automatic audio level circuits). It can go auto too – but the manual part is AWESOME when you need it. The closest the Sonys get is a "Normal" or "Low" mic gain switch in the menu.
* The HV20 can record in high definition and standard definition (4:3 and 16:9) in 24p… and 1080i. It the most flexible of the camcorders on the list you provided.

You will need a firewire port on your computer – USB is used for transferring stills from the memory card only – Firewire (i.Link; IEEE1394) is needed for importing video from the miniDV tape. Adding a port is easy if your computer has an available PCI slot (desktop) or PCMCIA slot (laptop). Macintosh computers have had Firewire 400 ports for many years.

Video uses a LOT of computer hard drive space – Standard definition is about 13 gig per hour and high definition is about 44 gig per hour of video imported to your computer’s hard drive. An external hard drive is strongly recommended.
References :

The other "feature" to ignore is digital zoom – that is useless and should be disabled when you get the camcorder.

Things to consider that matter:
Lens size (bigger is better – lets in more light)
Imaging chip surface area (bigger is better – captures more light).
Least amount of compression applied to digital video stream (MiniDV tape is least – next are hard drive and flash memory – worst is DVD).
Mic-in jack; manual audio control. (Just because a camcorder has a mic in jack does not mean it has manual audio control, but just the mic-in jack is better than not having one. The Canon ZR800, 900 and 930 have mic in jacks but no manual audio control; the Canon HV20, HV30, Sony HDR-HC7 and HC9 have mic in jacks and manual audio control.)
Low lux rating – lower is better.
Manual controls (other than audio) – zoom, focus and iris/exposure controls.

There are pro-grade camcorders that don’t take stills at all and good still cameras (SLR) that don’t take video. If you want good stills, use a still camera. If you want good video, use a video camcorder.
References :