Parapowered

The last time I owned a truck it was also my first ride, a 1976 Chevy 4X4, half ton step side with the 400V8 and if you could imagine...a TH400 3spd! Almost 50 years later I am about to make what is most likely my last new vehicle purchase in my life (I've had my current car 21yrs), so I find it fitting to go out with a 3500HD gas in AT4 trim. I welcome the refresh, but the 10spd......is it as reliable as the 6spd? From what I have read the 6 is bullet proof. However, the Diesel group has made rumblings about issues with the 10, my question is are the gas and diesel 10spd's the SAME transmission?