So I was at a convenient location to put a magnetic lure in and my son and I were able to evolve a half dozen Magnezones.
We were blessed with several Wild Charge Magnezones, but naturally we have a mish-mash of Spark and Charge Beam Fast Moves.
I looked here, and it seems somewhat ambiguous as to which one is better, with a slight lean towards Spark.
However, looking at this site: https://db.pokemongohub.net/pokemon/462/moves it seems like that if you plug in Clear or Sunny weather, and if I am understanding the Type 1 and Type 2 as the typing of the mon/counter you are fighting, then with the two types you would most likely be attacking with an electric mon, water or flying, then they are almost identical, and changing weather from sunny or clear to partly cloudy makes it flip flop between Charge Beam and Spark being better.
In other words, is it worth worrying about which of those two you have? It seems like there isn’t a very clear or strong advantage between the two.,
HOWEVER, that being said, there is a ton I don’t know about this game so there may be something I am missing. Any advice would be greatly appreciated as usual.