I have used Nero for years and, like you, heard great things about Roxio 8 from friends but never bothered to switch.
Last year my daughter bought me a new DVD-RW drive bundled with Nero 7 that needed to write DVDs. To be honest, I don't like the new layout as the menus seem busy & complicated. Went to see my son who has Roxio 8 & I was impressed with what I saw and how the various suites are so well integrated, has idiot-proof [to me anyhow] set up & an easy to follow process.
I have now bought this myself & ditched Nero and am much happier with this. To be honest, this is a major change as, before Nero 7, I saw no reason to ever change and enjoyed the comfort of knowing the program & how to use it. It seemed to complicated to learn again.
But I'm glad I did!