So, I'm now the proud owner of a King Tiger. And thanks to Pen3, I was able to pop my KT cherry with a few high-tier matches. We even partied with Sume for a bit, though she left when we were having a bad run... Which ironically ended when she left, and Darsovin took over.
Oh yeah, this is with the base tier 8.8 cm, so I have to REALLY aim carefully. Everything else is already at their final modules though, so all I really need to grind is the 10.5 final gun.