DVD Burner Specs

[SafeDisk v2]

Well I am going to buy a DVD burner here pretty soon and I am kinda unsure on who is the best and what spec's to look for.

I plan on making backup's of all my DVD movies so I would want one that could do and and still have them play in my DVD player.

I hear that Pioneer is pretty good but are they the best? Plus, are there any burners out there that burn single and dule density disks? Sorry but I am really confused in this area. I Know load's about CD-RW drives, but I have never used any type of DVD drive in my life.