I have the 250 and I'm not entirely satisfied. The main gripe I have with it is that wearing it is like putting your head in a vice. It clamps so tight (even after many adjustments) that I get a headache, mainly from the headband as it pushes down on my head. Also it seems to have a habit of switching off without any real reason. The battery holder is quite bulky (4 AAA's) and the batteries are a bugger to get out.
The best way I can put this is I own 3 headsets and this is the the backup to the backup. #1 is a DC13.4, #2 is an old Avcomm and #3 is the 250.....
I'd look elsewhere for a NC headset.
- Tim