Having just had an amazing run of luck and kills on Kagoshima in a Demolisher C (went from 2K/2D in a Raven E to 17k/2D in a Demo C, including a hair-raising standoff at the E6 base where I had to fight off a Thanatos, an Uziel and a dedicated BA all by myself) I have to say that the new RAC5 mechanics are terrifying. Units like the Warthog that only have moderate armour/ammo capacity are pretty nasty with them, but the Demo C is a beast - with 10 spare tons you basically never run out of ammo, and it has enough armour to absorb a huge amount of punishment. Scary scary tank.