I've said

"Say what you want about Tapco's other products, but their empty chamber indicator flags are top notch!"

How do I even know that?  They appear to be fine, but what if the plastic is full of dioxins?  What if they melt more readily to the chamber walls compared to the competition?  Have I test driven all the chamber flags out there? 

Meh, they are probably more than adequate, I bet.