I have a SS 42mm. I was recently visiting family who had a 38mm SS Haptic, and they immediately commented that the haptic feature seemed like a "joke," as they could not feel it unless directly interacting with the screen. We swapped watches for fifteen minutes, sending messages to each other, testing the haptic. Both of us agreed, that my 42mm SS felt stronger and more solid, the haptic feedback. The 38mm, if put up to your ear, even had a slight rattle when making the haptic rather than the solid thump of the 42mm. If you have a 38mm and 42mm in your household, do you notice a different in how it (haptic) translates to your wrist? Or is it likely that they got a watch with a weaker or even failing haptic engine? Thanks.