The quality and speed of the boards are fairly equal, but that's about it.
Slots are another story.
The Asus has 5 PCI, 1 of them shared with AMR.
The Abit has 6 PCI, 1 shared with ISA.
The extra PCI slot is needed by many.
Those features tell the story of who the boards are designed for.
No High End overclockers or power user would dream of using an AMR slot for sound or modem.
But, many of them do have an ISA hardware modem, or other ISA cards.
Any board that leaves off ISA is one I won't touch, and to replace it with AMR is a joke.
For those of you that do not know how to use the net to find stuff, (like Abits site) it is pretty simple. Type in the address bar of your browser, (without quotes) "GO abit", then hit enter. If you had done that, you would have found:
Abit's site!
Also, if you can't do this, then you need to stick with pre-built systems. How do you expect to find all the patches and drivers a system will require if you can't even surf the net?