Value of Sirius XM Traffic

:
GA prior 16 CX5 GT
:
20 CX5 GT + Prem
What is the value of Sirius XM Traffic? I like using the Mazda GPS as it is displayed on the HUD and well integrated into the sound system but would like integrated traffic. For folks that have it, how useful is it and is anyone using it in the GA, AL and FL area?
 
If you load the destination in both WAZE and the Mazda GPS can you switch easily between CarPlay and Mazda so that when on Mazda you get HUD directions and when on WAZE you get better traffic?
 
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