NERO all the way, and the burning rom is much better then nero express.
The only drawback is that with ECSC 5 you can control the order of the files you burn as to were on the disk they will be regardless of type or name it can also defragment the fils but nero does that as well. This is benefitial if you want to have some files on the end of the disk such that they read faster then the rest. If there is a way to do this in NERO please post it, making nero the no contest choice.