Can anymany tell me how I'm "supposed" to use end-to-end encryption with XMPP?

As far as I can tell there are three totally different ways to do E2EE:

a)OTR : "[https://xmpp.org/extensions/xep-0364.html](Not intended to be a current standard), or technical specification, as better (albeit, newer and less well tested) methods of end-to-end encryption exist for XMPP. "

b)OpenPGP: There are at least two different XEPs about it. XEP-0027 is obsolete, while XEP-0373 is "experimental" but hasn't been updated in almost three years.

c)OMEMO: "Experimental" and hasn't been updated in over two years.

Is there a way to do E2EE in XMPP which is neither deprecated nor experimental? What's the "Current stable" way to do it?

#XMPP #E2EE #EndToEndEncryption #OMEMO #OpenPGP #OTR