I'm trying a 310 currently, and the noise canceling isn't much better than the Yealink's
Like I can clearly hear my voice over the noise, it's just that the noise is still present. I've tried cracking down on topics of casual conversation around the office ("yo you see this f****** thing") but that's obviously hit or miss. Plus in our warehouse area, there's usually music playing which has proven to be a great way to keep all the workers happy and motivated, but callers to phones located in the warehouse have even said "wow Led Zeppelin today! great choice!" even with the music at very normal listening levels.
I could try switching everyone to headsets, but my initial tests with that showed very poor adoption.