I just received Cendyne dvr-105 4x dvd writer (dvd-r/rw). My questions:

1. Should I exchange it for a 2x? In other words, is 4x better than 2x? Heard that rumour.

2. What softaware (Nero, dvdxcopy, others?) is best to (1) backcopy DVDs (I have macrovision-disabled DVD player and a PC with firewire) (2) copying homevideo from digital camcorder? Or is that any really "good" (defined as bugs-free and fast/easy to use) freeware around that anyone can vouch for?

Thanks a lot in advance!