I though these were okay until...
I fell on the #3. It was in a shallow flared seam. The ball rotated in the groove of the nut and held fast. The piece was hard to clean, but held the fall like a champ. The 2 and 3 stay on the racking biner with my small stoppers, rocks and microstoppers. Even the larger ones will go places that cams will not. I do not consider the smallest size worthy of lead falls of any size, however.