The G3'd AFD Marshall sounds excellent as does the Splawn Quick Rod (I was using Gear 2). I was surprised how much gain is on tap with the Splawn even in Gear 2. I kept it around 5-6 on the gain and still sounds much gainier...almost like the Diezel VH 4 Channel 4 at similar gain settings.
The Quick Rod is a bit odd in that the Drive pot is linear taper. Most amps use an audio taper pot. This means that at noon the amp is nearly at full gain. Not sure why they did it that way but it is what it is.