From my experience 1 years using metamask, i was really satisfied with the application. The application was really easy to use because they have extension application on google. We can create a lot address without maximum address also they have some phising notification went we visit the phising site.
But went i backup my data from my wallet contains a lot of ethereum address. The JSON wallet only contains a single wallet i tough went the first time i using Metamask, JSON File can contains all See full review
