First, the Pros: These are an excellent set of props. Their design lends itself to varying patter. They are large and easy to see, and the gimmick is deceiving. The tutorial is (if you are a pro) almost worth the price without the props. You get lots of full performances and teaching from our top professional performers. For me, Roddy Mcghie is the most commercial. Alex said if I had a Copper Silver Brass set, there probably was no reason to buy these, but I got them anyway. But he was correct (although, as stated, I am happy to have the master tutorial)
The Cons: The set is heavy, and the gimmick is not easy to nest; various tips are provided, but you will still have a moment of fiddling to nest the button; if you are a coin worker, the size and weight may make certain moves harder. You will (in my opinion, require a Quiver or Quiver + to get a really clean effect; it is not essential, but it is a great help. If a standard Quiver is used, the set will leave rather obvious impressions on the outside of the purse (distracting if it is supposed to be empty), but the purse (Quiver) can be laid down on a table or hand with the offending bulge facedown. If the Quiver Plus is used, the looser nature can cause the props inside to chink on opening and closing. Either way, the set is bulky to carry. I will probably not use these, but I have taken Roddy Mcgies's routine and, using my Copper Silver Brass set, got a very smooth and easy (lightweight) EDC that can be performed strolling and does not require a table. So for me, this is money well spent, even if I will not use the Brass Buttons very often.