All the skepticism I had about the true quality of this product went out the window very shortly after unwrapping it. The eveness of the bounce, and smooth overall feel of these balls leave similar products by Stiga in the dust. It is very rare to find a product that actually performs as advertised. I really think that I got what I paid for, and then some! 5 stars

Perhaps all ITTF approved 3-star balls are the "same" if you use a new ball every match. But in my experience, Butterfly balls last a whole lot longer than others. Get a pack and try it for yourself. 5 stars

Butterfly makes very good TT balls. These balls are very strong and last for a long time. 5 stars

I bought 6 pack Butterfly 3-star balls. I used one of them and it had no uneven bounce and had a clean finish. I play TT with a group of guys who love to smash this ball as hard as they can. It lasted not more than 15 games (21 point game) or 3 days. I do know that some cheaper ones can last longer but they do have uneven bounce.

I hope my review is some sort of benchmark to measure the durability.
4 stars

These balls are superior to other 3-star brands I have bought locally. They are very solid, ie. strong against the slams. A very consistant bounce, and good reaction to spin. Very happy with purchase. 5 stars