I have used E-Coder Mini for years... since 2014, I think. It has survived numerous IOTA DXpeditions. It was in salty water twice (bad disembarking in +1.5 meter waves) - rinsed and dried under island sun - worked just as expected. When I moved it to new 3Dprinted housing - I have damaged main encoder, then just contacted EE, got recommended encoder version from them, and replaced with one bought from Mouser. It is still in my hand and (sorry) - not going to give it away, because I am pretty sure it will survive all upcoming IOTA DXpeditions.
E-Coder Plus for home operations - damn, it just does the job, no issues. Simply works.
Both models are demonstrating perfect job in busy pileup environment.
Good luck finding one, Terry.