Just to note, Divx 3.11 plays back very well on the KISS dp-500 player using the sigma 8550 chipset and the new 2.7.0 firmware. So the sigma based players are capable of good 3.11 playback, it just depends on the amount of cache/ram available. Many users however are still having problems with the dp-450 and 3.11 playback
The 8550 chipset seems to be alot better at playback than the 8500 and I hear that the new sigma chipsets are even better.