I debating whether I should switch the way I save and change data in my game. There are modules such as DataStore2 and ProfileService that I plan on switching to.
I’m currently using the normal datastore method (:GetAsync(), :SetAsync()).
So the question is, should I migrate datastores? I am aware of all the work needed to migrate, so is it worth it?
I’ve used DataStore2 for years now. I have not yet met any downside to it. Really easy to use, and you shouldn’t at all worry about data loss. 
Is it worth the work though? My game is near completion and I’m unsure.
How many hours do you think your migration would take?
About 2 - 4 hours (maybe)
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Oh, then for sure, in my opinion. 2-4 hours is a very small amount of time, compared to what you use on scripting a game. But it all depends on your reason for switching.
With DataStore2 it takes me 5-10 mins max, to setup the basics on a datastore system in a plain new game. So not only do you learn more about using DataStore2, your future projects would also have a almost plug’n’play method of storing data.
Am I able to use multiple keys and save tables with it?
You can store multiple keys under something called a MasterKey, and yes, you can store tables, dictionaries ect. in those keys.
Edit: How could i make a sort of purchase saving system? - #6 by TortenSkjold
Thanks, will try out DS2. Hopefully it turns out well