GT5 has memory for 20 rigs and comes standard with gyro.
I don't use it often on my Vorteks but when the roads were a solid sheet of ice after the freezing rain setting it around 25% made it a bit more fun.
It did help a little when I was first learning the truck, I started with it around...
I don't have experience with the Dumbo RC unit but I have the Flysky GT5 and the gyro RX in my TRX4.
Normally I don't run the AVC, I think FS calls it something different, but I have turned it on when playing in the snow and ice and it works at least as well as Spektrum AVC that came in my...