There’s no one “best“ as there are quite a few different feature options and different ones will work for different households. There are also of course budget concerns that might affect your choice.
You can read more about what the different features are and why some people might prefer one over another by reading the device class features FAQ. (The topic title is a clickable link)
If you don’t get enough information from the FAQ, give us a few more details on what specifically you’re looking for and what your budget is and people may be able to give suggestions.
Also, if you have more questions, we will also need to know the exact model number of your hub and which smartthings mobile app you are using.
