For me, new album is really solid, but I can't say it's their best, sorry skinnydrifter. :> Imho "II: The Final Option" is their opus magnum, because when I was younger, I thought it's their "The Best of" compilation - how I was surprised when I realised my mistake!
Die Krupps (1980) started before Rammstein (1994) and KMFDM (1984), they were making Industrial metal during the late 80s/early 90s with Nitzer Ebb before Ministry and Rammstein were popular - you can't say shit about them listening to Rammstein! Die Krupps always had the industrial metal sound on point, Rammstein just happen to be more accessible, popular and universally known
IIOEXABIIINN is right. When Engler sings "Rammt sie" he obviously reacts to people having a fixation of the so called Rammstein-Sound. So it's like "Oh that's what you want? Okay then, here, we have it. It's nothing new to us."