I'm have copied a couple of dozen DVDs now and it works like charm!

It's only liability is that it's price is a bit high.
Yes, quality costs more, but if you wanna be frugal (and I am) you may wanna search for a discount before buying it.
With froogle I found a site that sells it with 20% off the price ( http://www.lightsparkle.com/product_page-2590.htm ).