The CC6 and UC6 tyres were reviewed by some local writers and the lower noise was measurable (compared to CC5) and noticeable by ear.
https://www.carlist.my/news/review-continen...act-6-uc6/43107

Some other newer tyres which were reviewed:
Bridgestone ecopia ep150
http://overdrive.in/features/bridgestone-e...p150-tyre-test/
Toyo Nano Energy 3
https://www.youtube.com/watch?v=qkDfkw-lt30

I think the EU ratings can be compared across brands/models unlike the older UTQG and the ratings for those budget tyres are around C,C,70db which is decent.

Edit- Well it looks like I might be mistaken about EU ratings which can be manipulated by manufacturers. link

This post has been edited by imbibug: Mar 9 2017, 06:21 AM