If little to no post-processing on the PC is a major concern, then the DVD camcorder makes good sense. Bear in mind that you need to finalize a write-once DVD in order to view it on most (all?) DVD players. Once you finalize a DVD, that's the end of that DVD. If you recorded two minutes of video on it, then you have a two minute DVD in your library.

Rewritable discs make more sense, but you need to check and see what types of rewritable media your current DVD player will read. This is going to affect your camcorder choices. One brand will write to DVD-RAM; the other brand will write to DVD+RW or -RW.

I think the memory card gives you more flexibility, but probably means more time on the PC. You don't necessarily have to edit it, but you would probably want to burn it to a DVD. This can be time consuming. Unless you have a HTPC, then you could just transfer the recorded MPEGs and run them from your PC.

Of course, the simplest and quickest method is just to play the recorded video from the camcorder plugged into the TV. In this case it wouldn't really matter how the camcorder recorded it.