Storing settings for plugin

Hi,

I'm developing a TM plugin, and I have some settings I want to save for the translation provider. What is the recommended way of saving settings?

Option 1 They can travel in the URI to Studio and then Studio takes care of them.

Option 2 I can save them in a file on the local computer, if possible.

Option 3 ???

What do you recommend? If I save them in a file, what is the recommended location?

Thank you!

Agnes