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Like Sticky said lots of HDV cams film at 1440 x 1080i but when you make it square pixels (and progressive) for web delivery it becomes 1920x1080. But only certain cameras work with HDMI I believe.
As far as long term storage, my opinion is that tape is preferable to digital storage. How many drives are you going to want to keep in your closet full of old footage that you may want to re-edit, re-encode, or re-author someday? Tapes are so much smaller!
Digital storage is temporary storage in my opinion just for editing and effects purposes. Tapes will last longer than drives ever will and are more resistant to damage. I recently captured DV scenes filmed on mini-DV tapes in 1999 and I was able to recapture all the footage off of the mini-DV tapes flawlessly. Besides, those digital solutions like firestore drives are heavy, awkward to have on set and prone to damage even in the short term. Sometime pretty soon, there may be more elegant solutions, but if you film hundreds of scenes every year like some of us do, after a while you would quickly see the folly of keeping dozens of hard drives in a closet somewhere containing precious raw footage!
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