Which Digirig is best suited for Xeigu G90.... I want to use for JS8CALL

The Digirig in your new order is the similar functionality as the one you got in 2021. You can use either of the two with G90 or FT-891.

There is now a specialized version of interface for FT-891, the difference is that it allows to have a complete integration with the computer via a single USB connection - something that requires two connections with the regular Digirig Mobile. More on that here: