fyi Bill - I have my 35 lb speakers sitting on brass screws (with brass 'leveling' nuts). Total cost for two sets was about $8 - bought right down the street from my local hardware store. I had my subwoofer, when I owned one, on them , too.
They don't terminate in a nice neat pinpoint....but they are on light carpet and considerably stable versus them right on the floor (once perfectly leveled). They are also lifted about 3/4" up off the floor....a large part of the benefit of any 'point' is that they are lifted off the floor in the first place. The pinpoint is probably additionally beneficial...how much additional benefit is largely open to experience and interpretation.
Dang cheap, and they work fine indeed
EDIT: oops - missed your post - the points you bought probably are better, tho
