Replying to HD tapes.

So I have an HV-20 and I was about to go out and get some HD tapes for it, but someone told me that they are a waste of money and not worth it. So after a day of use and uploading the footage it kinda came out like poop, and something that my point and shoot camera with video mode could do. I have seen the quality of the HV-20 and it should be SHIT loads better then what is coming out. Am I doing something wrong or do HD tapes really make that big of a difference?