I went from a ‘17 Raptor to a 5.3 ‘18 LTZ Redline to a 6.2 ‘21 RST Redline, all crew cabs. The tech in Raptor is far superior in my opinion, and I definitely miss that. I needed to start towing more, so obviously my options are different than yours and I can’t speak on the AT4. I will say I really enjoy the 6.2 / 10spd combo so far.