Tip helps prevent spills
Lid does not pop open in field
Lids Break when hit directly
I buy these due to there availability nice ease of use and many other reasons including the GXG pod caps I have seen masses of colors available People like me who have used Dye pods have moved over to using GXG Pods. The only con is when the lid receives a 10 feet up close shot it's broken but that's why they are affordable. I highly recommend them for use with the following products:
However I would also state that you need to replace the plastic clips on these with metal ones.
The main reasons I guess is availability of the product ie no matter where you play you will find it then secondly quality of it it remarkable. However I'm starting to sound like a salesman.