Did you consider whipple or other brands? I am looking right now for my 6.2 and the PCM unlocking is where I am unsure. Did you get a second PCM or do the PCM exchange and lose your original core?
Mind sharing the cost breakdown of the PC vs HP tuner etc?
I went through this earlier in the year, I opted for the TB with a 6.2L (new for 2020). I made my decision based on looks, I prefer the exterior of the TB over the AT4.