I own the Bose QC35, and the Anker Slim. The in-ear tight fitting of the Slim is so good for shorter flights I just bring the Slim for compactness of luggage, the battery lasts long enough for Uber / airport / 2hr flight / airport / Uber. I use the Bose for longer flights, because I find Bose noise cancellation so good it seems to stop the day-after dull headache on a >3 hour flight.
I also own the Anker buds Life, they seem to do much less job of noise isolation than the Slim, despite trying all 3 bud sizes, but they have much better battery life so they tend to be used around the house a lot / almost exclusively.
So tomorrow I’m working from home for about 6 hours then its Uber / 3 hours airport - flying / Uber so I’m using the Life at home and leaving home with the fully charged Slim. I’m pretty much needing audio for 8 hours total til in hotel.
Top tip: Buy one of those Powercore+ Mini to recharge your buds, together it is a very compact package so that drop-off / security / boarding 30 mins or so, I recharge my Slims then, and the seatrest upright but electronics away / landing uptil I order Uber, I recharge the Slim then also. The other option is own 2 slim and when one flat swap and connect to the Mini+.
The reason I mention Uber a lot and buds is that “where are you” finding each other thing with no wires in the way, one hand holding cellphone other hand opening car door. I stand there with one right bud in right ear to keep the mic near my mouth and the other bud tucked under t-shirt. It’s a system which works.
During the flight I am currently watching downloaded Mr Robot, I’m up to series 2 episode 5.