I hesitated between several helmets and I finally fell for m-reading 80 after numerous tests and comparisons. The main advantage of this helmet is the clarity and tonal balance. It does not fall into the excess low as many current headphones (not to mention the beats ...) and develops a very neutral sound, very respectful of the entire sound spectrum, short natural sound. The build quality is impressive, one feels when one has in hand we will not break it soon!
One flaw for me: small atria which does not cover the ear but are put on it, which is not very comfortable during long listening sessions, especially when you have a big head like me! ! But you get used quickly enough.
Ultimately, it is in my view what is currently done better in this price range: good sound quality, robust design and nice carrying case ^^