all my boards are ecs and i have no problems with them at all. they had some bad boards in the socket A years, but thats nearly 10 years ago.
i mean i've had friends have serious problems with the sandy bridge asus boards, which are very expensive, so i dont think ECS is any worse than anyone at this point. their stuff is just no frills, but they are much less expensive.
i always get ECS or biostar etc since well, i'm not an overclocker much and i'd rather just have the money to blow on more ram / ssd s etc.