What is the opinion of Reddit about the
B&O Play by Bang & Olufsen Beoplay H6 (Black)?

The B&O H6 is the first option to come to mind.

Are you specifically looking for something that has active noise cancelling, or does something with good passive isolation work?

Well the M50x is the update with detachable cables. Some people love it and some people hate it.

Sennheiser HD598C is another popular choice these days that’s comfortable but will offer a bit less isolation.

The first Gen Beoplay H6 is a steal at the current price and something I think is very underappreciated.

Beoplay H6 £135
https://www.amazon.co.uk/PLAY-Bang-Olufsen-Beoplay-Headphones/dp/B00C4VFYFY/ref=sr_1_9?s=prime-day&psr=PD16&ie=UTF8&qid=1468341446&sr=1-9&keywords=headphones

Any advice on these?

Im going to leave this link here, that’s all.

https://www.amazon.com/dp/B00C4VFYFY/ref=twister_B00P9YXMUM?_encoding=UTF8&psc=1