Best is for picture quality is Mini-DV it always will be the best.
Hard Disk is best for ease of use and storage capacity. But if you want to do serious editing you may run into issues. Movies stored on harddisk are stored in a mpeg2 or 4 which means you are only getting every other or every 4th frame.
To bottom line it for you.
If you want to do just regular capture the family recording then hard disk recording is absolutely the way to go, it's simple to use, easy to work with and you never have to worry about tapes or anything.
give you an web suggestion
www.gizmograbber.com