Their nForce2 Ultra400 board was superb, best socket A board money could buy. The nF3-250Gb was late to the party, but also decent. I never had an nF4 board but they were well recommended.
Sadly though I never got along with their Intel chipset boards - one of their X48 boards I owned ended up snapped in half when I got totally fed up with it refusing to play ball, then the miniITX P55 board was very finicky and tricky to overclock. I soon chucked that onto the MM and moved over to something else.
Shame really.