Please help: Mushy or 2-step feeling? Buttons on Fenix 5x Plus, which is right one? Should I ask for replacement?

You should be able to find a few threads about this for the 5+ too. There is some variation on the buttons. And there will be some variation on the buttons if you get a new watch.

And then a small pet peeve of mine:

I haven't read the 945 thread, but it sounds like a misuse of the term "tactile response". With tactile response, you should be able to feel when a button has registered your button press. That is actually a problem, which has annoyed me for decades: Many buttons - not only on watches - have a well defined "click feeling" when you press them. But the "click" comes before or after the button has registered your press, so the click can't be considered tactile feedback - it is only false information to the user. 

Thanks for your reply.

So it seems to me: The mushy or 2-step feeling button is a problem, but, even I ask replacement, I may meet same "problem" on some other buttons on the replaced new watch.

Is my understanding correct?

Whether it is a problem is up to you. But yes, you will probably never get "perfect tactile feeling" in those buttons.

And to be fair, it is probably easier to make a button with correct feel if it doesn't have to be waterproof to 100 meters.

I see. So I am asking for other users whether this situation exists in their watches as well.

If yes, I don't consider as a problem since the function does work, the final click still work.

In my country, whether consumer can ask a replacement is not upon their own feedback or satisfaction, usually, if s/he ask for a after-sales service to replace or refund, the product must be detected and confirmed by the manufacturer's engineer. - Once the engineer or service center said: yes, this is a quality issue and impacts the using of product, the consumer can get a replacement.

If not, the manufacturer saying: no, it does not impact the function, you can still pressing it the button still works, just your personal feeling. Consumer will not get the replacement.

again, so, I am asking whether this situation exists in other users products or I am too picky?

To me, it was a problem, I accepted it, but I am not sure now...

Thanks for your reply and "it is probably easier to make a button with correct feel if it doesn't have to be waterproof to 100 meters.", I understand more about it now.

My buttons aren't perfectly tactile in that sense, but they always work. I figure since I don't really use them excessively, and it doesnt impact my use of the product - to just accept it - and especially since I run in heavy rain etc I'm happier knowing that compromise in tactile file is at the benefit of waterproofing

My run/stop button has a more defined click then the others, but the others are consistently the same so that may be by design.

Thanks for your reply.

After discussing with forum members, I understand since I can hear the sound of "click" as responding, that is the tactile response, no matter 2 times sound or 1 time during the click.

I will enjoy it and forget about it's 2-steps tactile or 1 step.

I frequently find the buttons change 'feel' after a period of use or not being used. The buttons also feel differently depending on which ones get used more often. However, they work. They don't stick. And I have /have had this difference between the buttons on all the Garmin's I've owned.

I certainly don't consider it a problem.

Thanks for your reply philipshambrook. I feel more relax after reading your inputs. Keeping my watch will not ask for replacement.