I also find the 3520 to be a great burner. Many of the people that lurk this forum have more than one burner. The average guy who wants to back up his movies only has one burner. He might have just ambled down to CompUsa and picked up a Memorex DVD burner, reached over and picked up a spindle of CompUsa brand DVD -R's and headed for the checkout. He gets home, tears out his old CD Writer, and replaces it with his new burner.
He finds DVD decrypter and DVD shrink and starts having fun. A while down the line after a few coasters, he heads to this forum. He finds that he can flash his drive to remove riplock. He finds out that his Memorex is actually a NEC. Removing RIPLOCK doesn't really speed up his process and he wonders why.
He reads this post, and now he knows.
There are good burners out there that will rip your DL DVD's much faster. If you only have the money to buy one optical drive, the NEC is great but don't be disapointed when you find that it takes you and extra 20 minutes per rip. If you have the time, NEC's will make great disks and you will probably save money on coasters.
I would like to know why the same people that bring us such an awesome product limited their rip speeds on dual layer media/movie disks? Is it beacause they want to make backing up your movies a tedious process? I think so. Why do they even care? Can a firmware hack speed up the rip speeds for this burner?