I mean I personally like showdown better but what are the pros and cons for using each stimulator
Showdown:
Pros:
Cons:
Pokemon Online:
Pros: - Nice teambuilder - Many different servers that are easier to see
Cons: - Must be downloaded - Cannot work on mobile - Common errors with battle mechanics
Overall...
trumps
Pros: Free, Many different servers to choose from, More tiers(thanks JCM), Cons Crashes more often than PO,
Pros Doesn't really crash often, Cons Needs to be downloaded, Not as friendly,
I'll edit as I think of things.