I tried the Sennheiser, but wasn't impressed with the device overall. I actually managed to narrow it down between the B&W
P7 and the new B&O Beoplay H6. I already ordered the
P7 after spending over half an hour in John Lewis, but went back today to try the B&O because I just realised they are the same price. Unfortunately there were no display pieces and there is no way I am dropping over £300 for headphones I didn't listen to. So ended up getting the P7s after a lengthy deliberation and much research, and I am impressed with it.
I tried the QC25 and honestly there wasn't much of a noticeable difference between the QC15, but I just feel like they are milking consumers to consistently change their ear cups at £30. I replaced this pair about 2 years ago, and they are already peeling and splitting, it is absolutely ridiculous. Just disappointed with Bose, their quality has reached new lows to increase their profit margins. When B&O and B&W are using REAL leather and metal it makes Bose products look like a joke with the pleather and plastic. Shame because they do have the sound quality down most of the time.
Not quite the fan of the in ear headphones so the QC20's are out, and unfortunately I have been so turned off by the brand now that I am not sure I will ever buy a Bose product. Sad considering my family and I have purchased so many of their products.