The only A-Open product I have tried is their Geforce 2 MX and it works very well. Installed without incident, seems to match up well with Celeron 600@900, no complaints as games run smooth with decent framerates at 1024x768 with 32 bit color and full detail. So far, so good. I may have to try one of their sound cards if I try to build a Duron system, as I have heard of people having problems with Aureal chipset sound cards and the Via KT-133 chipset motherboards.
Chuck