Noise Cancelling Headhpones

I've long been uncaring about the quality of the headphones that I use when listening to music - but as the noise level within client offices has grown over the years (with the adoption of Open Office floor plans) - I've come to a realization that I need to improve the quality of sound isolation afforded by my headphones.  So the quest begins...

Some background research:

• https://www.pcmag.com/article2/0,2817,2115378,00.asp
• http://www.consumerreports.org/noise-canceling-headphones/who-makes-the-best-noise-canceling-headphones/
• http://www.consumerreports.org/cro/headphones/buying-guide

I think I  will splurge for a Bose eventually.

• http://www.consumerreports.org/products/noise-canceling-headphone/bose-quietcomfort-35-387388/overview/
• http://www.consumerreports.org/products/noise-canceling-headphone/bose-quietcomfort-35-387388/overview/

But, the Plantronics may be a viable alternative

• https://www.pcmag.com/review/348823/plantronics-backbeat-pro-2