I have a RT/SE Golem and evolved 2 extra Eevees because of the the Psybeam on my high level one. In my opinion, they are both relatively easy pokemon to come by. So i would not use it on either, but because of how many candy it takes.... i would go not go with either. But i understand your feeling i battle with not using my charged on the same scenario.
Charged TM Question
I just got a charged TM and wanted to use it on one of two Pokemon. Which is the better option?
96% IV Golem, Rock Throw/Earthquake
96% IV Espeon, Zen Headbutt/Psybeam
Both Pokemon are level 30. I was originally going to do the Golem to have double rock but I started thinking that at least the Golem is usable against Arcanine and other raid Pokemon. The Espeon with psybeam is pretty much worthless. I will also add that I have both a Rhydon and Alakazam maxed out and don't care about defense right now. Which Pokemon is better to use the charged TM on?
I have 2x Zh/Psychic and 1x C/Psybeam Espeon...
I've always felt it's safer to just get more Eevees than change Psybeam in case moves change again so I would leave Psybeam as is since it's still a 2 bar move...If they changed the speed a bit and bump it up a bit to not be so bad, it would be a better move than Future Sight IMO since it's easier to fire off 2 bars than get 100 energy for a 1 bar move.
You could wait till the weekend and if Legendary Birds make an appearance, you could TM your Golem then...
I TMed a 97% RT/EQ Golem myself since I have an army of Rhydons already (from previous gym meta) and would only want a Golem with double rock...I also was concerned if rock moves get shifted out (I actually wanted Rock Blast since I already have 1 SE Golem already).
If Rhydon gets a rock quick move, it would be better than Golem instantly...