AirPods Pro 2 - I'm still on the Lightning enabled kit while my wife has the USB-C version. I won't upgrade just for USB-C but as far as improvements, I just want more fit-tips. The S/M/L offered today has fitment issues for me primarily because of a lack of a certain gene.
So, I don't sweat..well I rarely sweat. I don't have body odor and I don't produce ear wax or much phlegm. My ears are dry and barren. So Apple's ear tips slide in and out like flour on a sheet of aluminum.