@technogeeky
I will try to answer.
1.The transmission delay on the PC is very small. One of the advantages of software, is the ability to display on a large screen.
2.The device has the capability of a dual display, But to display different information from the second display, you need to switch, The software receives and displays all the data at once.
3.Some data received by the software have additional resolution that is not displayed on the screen
For some people, these features can be useful, but I believe that it is not worth the money that ask for the original kit.
But if you make the adapter yourself (it cost me $ 2) Then it's worth it.