Ok... I know your favourite tank, rifle and camo from WWII Germany, but what's your favourite artillery piece they used?

Hmm… The 8.8cm Pak 43/41 Behelfslafette. It’s basically the 88 from the Jagdpanther (repleat with the cast mantlet from the vehicle) mounted on a substitute carriage.
Some were found in the Berlin area (like the famous one that was buried into the street so as only the barrel was a foot or so above the cobblestone street! ) and gave the Soviets many problems in their initial push into Berlin proper.