Either works, really.

Neither

Neither. I say either.

Ironically, either of them depending on the situation. Sometimes I even express the concept that I am indifferent to the choice between two things or happy with both of them by saying "ee-ther, eye-ther"

Both. Context-dependant.

Eye-ther mostly, but like with many words I'll alternate between pronunciations! (You still won't catch me pronouncing "decals" like dee-cals though!)

In my head I pronounce it as "either", but out loud I pronounce it like "either"

Tomato tomato.

either

I don't. I say either.

yes

I'm in either camp by default, but I'll gladly use either if around other people that do

So you say both then?

I say ether. Every once in a while I find someone infuriated by that, and it gives me much joy.

There's multiple ways up pronounce it?

Either either or either, depending on maybe the context or the phonetics of words used. Kinda like how you say the or the depending on if the next word starts with a vowel or not.

Yanny

Whichever one you say, I say the other one.

Eye-ver

Probably eye-ther, but eee-ther on random occasion

Growing up, I self-taught myself to pronounce this word as "Ee-ther". Then I went to a private teacher and learned that the correct English pronunciation is "Eye-ther". Then I also came to know that the word can be pronounced in both way regarding different accents. Then I stopped caring which pronunciation I was using while speaking. Most of the time, I say "Eye-ther". I utter the later one barely.

I use either either and neither neither nor neither either.