I've personally used two of their PX845PE ProIIs boards and three of their PX865PE Pro II boards. I actually owned one of the former and two of the latter... Killer excellent boards; the 845 one would do 209FSB stable with HT enabled and the ram at 2:3 (500DDR) and both of the 865 boards would do 288FSB stable with HT enabled and the ram at 1:1 (576DDR).
So, at least in general, I know that Albatron certainly has the capacity to build great motherboards. I don't have any personal experience with the 875p board, it simply didn't have enough features for me. I found the 865 Pro II to be a better deal with the same 7.1 audio output as the M-Audio revolution, along with the P-ATA raid, the CSA gigabit ethernet and the tons of other options it came with.
It's preparing to be watercooled in the next week, so it can only get better!