If you want a premium version of the RHM Borsig with the 128mm gun, this is your go-to tank. It has good speed/mobilty, nice camo values, (obviously no armor,) enough viewrange and a very good 130mm gun. The DPM is very nice, as is the penetration of both standard- and gold-shells, 530 alpha-damage feels great, and while the gun can troll you from time to time, you can still quite reliably count on hitting your shots most of the time.

God camo and alpha damage.
Once you get used to the trollish gun, it is a great tank to farm silver credits.