Like I mentioned, I get it that some people find that convenience trumps other factors. That's always been the case - different strokes for different folks. My thorn of a complaint remains: Apple did not need to get rid of the phone jack to accommodate bluetooth folks. Phone jacks never stood in the way of bluetooth, nor vice versa. Bluetooth devices will work with my LG V40 just as well as with an iPhone, and also produces great sound for wired devices. These features don't have to be mutually exclusive. By removing the jack, Apple greatly enhanced its Bluetooth device market for folks still willing to buy the jackless phones (and now iPads). My 6S+, with phone jack, delivers Bluetooth just like the phones with no jack. Apple has embraced, over the last five years, two basic trends with their devices - thin and small, minimalist use of ports (inclusive of the jack). I have not been able to embrace that philosophy, and as Apple has gone exclusively thin and minimal, esp. with laptops and iOS devices, other brands have stepped up to fill the void, certainly in hardware offerings. Once my 2017 iPad Pro and my 6S+ finally die, I'll somewhat regrettably be out of the iOS fold. With great improvements in Linux and PC laptops over the same five year period, leaving Mac laptops hasn't been so painful. Still have an iMac desktop, only two years old (from which I'm now typing), so we'll see what comes after it.
BTW, the Bose bluetooth headphones have gotten good reviews - I'd choose something like that or perhaps the Sennheiser HD1's if I went the wireless route. The Senn's have pretty low impedance (18 ohms), not sure about the QC 35II. I'm guessing - maybe I'm wrong - that bluetooth devices generally have low impedance due to battery restrictions for power. With wired over-the-ear headphones, I generally keep between 50 and 100 ohms for extensive travel - that's a realistic limit for use with smart phones without using an external DAC. The Beyerdynamic headphones I mentioned above - 150 ohms - don't work well with phones. They're great with laptops with good audio software. Sorry this has been long winded.