Break easy (a weakness in my case)
Fill is bright
Break too easy
Well these were recommended to me by my local shop as being a great match for a J&J ceramic barrel that I have. They are a great match for the barrel, but not for my marker. With the A-5 there is too much force for these balls. I had nothing but breaks. And not in the barrel but at the bolt. Even when performing a drop test, 6 of 6 broke on impact from 6 feet. If you have an ION or similar electric these would probably suite just fine but not in a Tippmann.
Part of my problem may have been that these were tested on cold weather but they were really a waste for me. I hoped they would work better with my setup because they came recommended to my by my local pro shop. The price seemed great ($30/case)and were a good paint to barrel match. Just make sure that your marker can handle brittle shells.