Edit: I see OP has already made his decision.
I’ve got both the QC35s and AirPods.
IMO, the Bose are actually better at maintaining a connection and staying connected.
My AirPods will either randomly drop after an extended period of time, or won’t seemlessly sync when out of the case. I’ll often have to put one AirPod back into the case, close it, then try again to get them both working.
Also after using them with my Mac, if I then switch to my iPhone later on (with a break in between where they’ve gone back into the charging case and my Mac is off or out of range), I’ll have to select the AirPods from control centre to actually use them.
Maybe my pair is faulty, but yeah. The simple old school Bluetooth connection on the QC35s have worked better for me so far.