After reading a few reviews, I was still very skeptical about these tubes. They cost 2-3 times more than regular tubes and some have said that they don't hold air that well. Here are my thoughts:
I'm still not quite sure if these observations are more in my head than quantifiable differences. Mainly I wanted to rebuke the claim that these tubes are more prone to problems when installing them. There's also a feeling of quality in these tubes, from the packaging, talc, unusual color and clear cap.
These are light and add a small degree of comfort to your ride because they are more supple than butyl. Puncture resistance is on par with butyl tubes of similar thickness. The only real drawbacks are the high price and the need to check inflation more regularly as these do not hold air over long periods as well as butyl.