I actually prefer ABIT...well its one I have in my PC now. I like it because they tend to have some great overclocking capabilities, for example, mine came with the ABIT Guru Clock with temperature sensors, etc.
I haven't tried overclocking my system yet, though I know I will try when I get better cooling, so its good to know the options there.
I've heard ASUS are very good too though all round.
The only gripe I have with ABIT, is this board, AV8 is an overclocker, yet they haven't given it the best RAM capability to do that (PC3200/DDR400 MAX)