Amplitude is easy to implement and simple as compare to Adobe Analytics(AEM)although there is a vast difference in terms of UI, functionality and cost. Most of the user specially product team like Amplitude as compare to AEM.
I find Amplitude much easier to use than Mixpanel or GA are. The UX is easy to grasp and as long as you have an intuitive set-up or good documentation on how your events are set up it makes for quick onboarding. Looker does a better job of easily allowing customization with SQL and calculations but it isn't as user-friendly.
Amplitude Analytics is an easier tool to use. It requires less knowledge of SQL and as long as you have notions of data analysis and retrieving data in general. It is much more user-friendly and allows for easy and quick reporting. It can be used by different teams and therefore can be an easily shareable tool.
We've used a ton of analytics tools and Amplitude allows us to do everything we need for free. The other options we tried were either not robust enough to report on user level stats, or cost $. The platforms in this space are super competitively aligned so functionality wise there will be a lot to check out but Amplitudes ease of use also stands out as a huge + for us.
A lot of data can be tracked via manual tracking or linking to an excel sheet, but with such a huge amount of data, it is far easier to have all of it laid out in an easy to read format. The charts and graphs are easy to use and are really pretty user-friendly. The hardest part is in simply finding the event that you want to use.