SiS chipsets, in my opinion, are GREAT in terms of stability for things like burning.
They aren’t always the stellar performers that nVidia or Intel chipsets are, but they win hands-down in the throughput/stability balancing arena.
In other words if you want to listen to some streaming multi-channel audio while copying a file across the SATA bus and burning across the IDE bus and then you want to surf the web all at the same time, there is no better chipset to do that with than a SiS chipset.
Bear in mind it wasn’t always this way. SiS’s Pentium3 chipsets were HORRIBLE. Their SiS735 for Athlons was very stable but also VERY lacklustre in performance. But their 745/746/748 for Athlon were VERY stable if not the fastest, and their Intel chipsets of late have been excellent.