I have been very happy with my 3500, but I am surprised some say they prefer it to the newer 3520. I guess newer isn't always better, but many of us are waiting for PI/PIF FW which supposedly is being tested. It is a great burner. It is a good ripper, but does rip better with mod FW, of which you have many choices on this forum. This forum has excellent support for the drive. I am currently using Verbatim 8X -R and +R DVD's which burn at 12X in about 4-5 min. I do want quality testing for my archive discs and I won't wait forever for the new FW for the 3500. I will buy NEC again, so my next drive will prob be the 3520 which can do quality scans with the latest FW.