Not sure if this review has been posted: https://nsmb.com/articles/transmission-for-a-bit-less-sram-t-types-gx/
An excellent and unbiased review, also some pretty good discussion in the comments. Great quote: “When it comes to the shifting performance of GX Transmission, it is as excellent as it is unnecessary for the average mountain biker.”
I have ran normal mech Gx for years on multiple bikes and I liked it. Yes it was a little fiddly, but its cheap, never let me down on a ride, and shifts well. I’m sure this new stuff is lights out better, but not sure if I actually need that level of shifting performance.