Well I went and bought these headphones when my old Philips ones finally stopped working.
After reading all the glowing reviews here, I am sorry to be almost the only dissenter. I am extremely disappointed that I wasted my money on these headphones.
Prior to buying these, I had a pair of Philips NC headphones that I picked up at Changi Airport back in 2007. They were rated at 85% noise cancelling which I suppose in reality is a pretty meaningless figure in the scheme of things as this is very subjective, and will vary from person to person I guess. I tried a few pairs in the shop within my budget, so that excluded Bose of course.
Whilst not perfect, these Philips headphones met my needs, fitted over my ears really well, were comfortable, reduced the engine noise on the planes, and were great for the IFE. For the price (about $175 from memory) I was very happy, and they did several overseas trips, along with the daily train trip to work. One thing they did do well was block out the garbage on other people's iPods etc on the train, and eliminate those irritating keypad tones which just drive me demented for some reason. I can't stand them and they are totally unnecessary.
Before buying these headphones, I emailed the company and they told me the noise cancelling was rated at 90%. So I was expecting them to perform at least as well as my old Philips or better.
Sadly this has not been the case. Firstly, the cups are not deep enough and do not fit as well as my old Philips. Secondly, while they do mitigate the engine noise on the plane nearly as well as the old ones, it is not quite as good. However, on a recent trip to Hong Kong and Singapore, I found that when wearing the Noisehush headphones on the plane, I could hear the sound coming from the headphones of the guy sitting across the aisle from me who was watching some action movie!!
Not only that, when I try and get some relief from the noise of iPods and keypad tones on the train each day, the Noisehush headphones are totally useless.
So to say that I am disappointed and very unhappy is an understatement. I am totally at a loss to understand how so many people think they are wonderful. Your criteria must be totally different to mine.
Now I am bereft of ideas as to what to do. I cannot continue with the Noisehush. As far as I am concerned they are not fit for purpose.
I have reached a point where I should probably try to replace the Philips, though I have forgotten the model number I had. The other alternative is to try and scrape up the money to invest in some Bose QC15's, though not everyone seems enamoured with them either from various reviews.
I would be grateful for any advice on what to buy.
Secondly, if anyone wants another pair of Noisehush headphones, mine have had little use and I am happy to sell them for a reasonable offer. I have packaging etc still.