Clearly, anything digital is superior/more advanced than the old style analog 8mm. DV has higher image quality first and foremost and you can still transfer the info to VHS, but still have the potential for computer editing, DVD storage, imaging, etc. Digital last forever, analog will eventually be lost.
Surprising that you can get miniDV for same price as 8mm (HI-8mm). I recently got a Hi-8 new for under $200, just as a temporary until i can get the new HD DV, which is better than broadcast quality.