Editing footage from anything, but tape (minidv, 8, D8, Hi8,, etc) is shotty. You would think that capturing to hard drive would be great, but the compression techniques and the proprietary formats used by the camera maker make editing difficult. Same goes for DVD. Plus for DVD cams, one glitch on a disk can make the entire disk no good.
Until technology improves, tape media is the best media for recording. If you need more proof about the quality of tape media, just look at the types of cameras the pros are using: Canon XL series, Sony vx2100, panasonic dvx/dvc.
I'm by no means an expert. I have worked with all of the media you speak of and tape media is by far my favorite.
Sony DCR_TRV240- Digital 8
Dell 4600 P4 3GHz, 1GB RAM
Nvidia 6600GT 128mb
Sony Vegas Movie Studio 6
Photodex ProShow 2.6