This is the first time I got Apple airpods, and got the APP3. ANC is good, buds comfort is good, though they don't look aesthetically good when in ears, because they bulge out a little, which was not the case with previous generations. Sound is very loud at maximum volume, sound signature is just ok, bass low frequencies could have been better if boosted slightly.
Pairing with other non-apple devices sometimes becomes a nightmare. The double-tap on the case doesn't work with a silicone cover on top of the case, so have to remove them from the cover to do a pair-up with non-apple device.