The best (safest) stands are ones that have a pin that goes through them. Those cast lugs have been known to break off. Even if you have ones that are not on the recall list, be careful when dropping the car down on them. Let it down gently. I have seen them slip and heard many stories of those lugs breaking off.
I have a pile of 6x6 and 4x4 lumber blocks, its pretty much all I use most of the time. If I do use jack stands I will still throw a couple blocks under in case the stands fail.
