can go up to 2 hours of video time is the compression used. The quality of the video image will suffer. There is a HUGE difference between the SR100 and the DC22. If you are limiting yourself to these two cameras, go for image quality and go with the SR100. There is a reason why it is nearly 2x the cost. It is a much better camera.
If you are telling us that you have already decided on the DC22 because it specs out nicely, keep in mind that those specs are not based on the image captured in the "long play" mode (the 2 hours of video) but normal mode. People have given me DVDs to edit from DVD-based cameras and the image quality is not too good.
For image quality, and a whole bunch of other reasons, I continue to be a MiniDV tape user, but I won't try to talk you out of your decision - just be sure you are making the decision to go DVD for the right reasons... 2 hour miniDVD DL is not a good reason - unless you really don't care that much about image quality - in which case it is a perfectly fine reason.
I m trying to decide on the Canon DVD camcorder DC22 as to a Sony HD camcorder. Have anyone have any experince with the DC22 that you can share? The DC22 seems to have a real nice speci - to match the video speci of the DC22 and at ~$500, I would need to go up to the Sony SR100 in which will cost up around $900+. Also the DC22 uses the mini DVD DL that can do close to 2 hours of recording.