I haven't liked active noise cancellation in the past. For office work I tried an old Bose quiet comfort (10 years ago) and decided I much preferred Sennheiser

I haven't liked active noise cancellation in the past. For office work I tried an old Bose quiet comfort (10 years ago) and decided I much preferred Sennheiser HD 280s for isolation. Also I've heard bad things about the microphone.