I agreee with most low reviews.. I bought about 10 dozen. They tend to break after 2-3 smashes, so I had to steam them which made them decent... almost mandatory for these birds. A few would last 8 points, but very inconsistent. A few will have slight wobble in flight (1 out of a dozen, but low intermediates won't notice). Feathers are medium-thin thickness. Most advanced players (those that have played tournaments) won't play with them at all. Ok for beginners to almost high intermediate. Flight is ok, I'd say around B,B+. Durability B-,C+. Consistency B-.
Good for the price, good for warm ups, but can be frustrating for more advanced players. I don't mind hitting with them for most casual-competitive games, but would need a more solid feel and stable flight in high intermediate games - games that have a couple consistent jump smashes.