Qc35 when I want to be alone and AirPods when I don't mind.
QC35's are brilliant and the first ANC's that I don't get sick after 10-15min, with some lounge/dance music on they push every office sound away helping me to create a nice isolated world where I can work and concentrate to the task at hand.
AirPods are easy, small, no tangles and help me to dampen the regular office noise and keep me in the zone where I can work.
Charging is no problem on either of them. The QC35 works for around 20 hours on a charge. The AirPods keep going for 5 hours and 15 minutes charging will get them another 3 hours. I think they achive a full charge after 30 minutes. So regular lunch is more then enough to get a full charge.
Sound quality on the QC35 is much, much better when compared to the AirPods. No wonder, but for ear pods the AirPods aren't that bad. I would say "all right".
The same can be said for the QC35 when compared to reference headphones.
But the point is you don't compare them with a physically different set or something that is twice as expensive.
When you compare the QC35 with the others in the market, they are rellly good. Best ANC IMHO, really good and strong fibre-reinforced plastic, good construction, soft ear pads, not too much pressure on my head but they also stay put well, reasonable small foldable, good zipped case. The price is a bit high if you aks me.
The AirPods are much, much better when compared with other wireless buds (that also have no connecting cord between left and right). Bragi is almost double the price have 4 hours playtime and then 2 hours charge time, Samsung seems to have 70 minutes of playing time and 1,5 times a charge in the case and also a much higher price. The silicone mushrooms do provide a much better seal and therefore also a much better sound. But I hate the slicione mushrooms as they annoy within minutes and seriously irritating in 10-15 minutes and after 25 minutes I seem to get an inflammation. Only in-ears that have worked so far are the ComCom's from Phonak: custom 3D printed nylon in-ear buds that also provided measured and certified hearing protection.
So for me the AirPods are really nice and work really well, the combination with the QC35 gives me a solution for almost any situation.