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Sennheiser MM 550 versus Bose QC15 Headphones

  Recently I made a big step - I decided to sell my bose headphones and buy a top of range set by Sennheiser, both noise cancelling. The reasons for the decisions are a long story, but in short, it was the wireless bluetooth feature they offer.  Now that I still own both, here is a comparison, not from a audiophile, but a simple user and lover of gadgets!   Sennheiser MM 550 Headphones: Pros + superb sound quality, beats the bose hands down + bluetooth is great and works up to 10m + works with a cable with dead batteries (a huge issue with my bose) + controls iphone/ipod via bluetooth - very sweet + cool talk-thru feature where you do not have to take them off to speak to someone + built in microphone for phone calls over bluetooh (okay you look stupid, but its fun!)   Cons - a bit hard on the ears, especially for those with glasses (I guess thats reasons Bose's QC3 on-hear exist :) - too many buttons to press for 3secs or 5 secs. A simple sliding button would be great for on/off. - very poor looking case for a expensive set of headphones   Bose Quiet Comfort 15 Headphones: Pros + Noise cancelling is more "feelable" on the Bose versus Sennheiser and somehow more satisfying. With the Sennheiser you sometimes are not sure if they are on or not! + they are very comfortable to wear, even with glasses on + AA batteries power is great for travelling and those not good at charging units   Cons - Batteries a must, cable a must - lack the wireless features - Sound quality is not there. I actually remember that from the first day I put them on - I was expecting a wow effect, but I only got that from the noise cancelling, not the music.   Conclusions:  Both are great headphones for those travelling a lot.  If you want a simple plug and play noise cancelling solution, the Bose will be great.  If you want sounds quality there is not deciding, simply go for the Sennheiser.  The Bluetooth feature is the reason I got them, its fantastic to run around at home/work without pulling your ipod onto the floor when you pick up a print out!  Sennheiser get a few softer cushions and a "normal" on/off switch and we wont be writing any comparisons, because they will be simply in a class of its own!