I went there about ten years ago and it was very good. We went on a day when they were rearranging the displays so a lot of the vehicles were moving in and out. Got smoked out a bit by the exhaust but, hey, if you are going to die of something it may as well be exhaust of a panzer.
That area around Munster (without the ü btw) is where Guderian did all the training for the Low Countries invasion and Bergen Belsen concentration camp is within that, what is still, a military area.
My take away was that mobility of a gun is key. After seeing various fixed towed guns there that would be difficult to reposition quickly needing many men and horses, etc., simply having it on tracks, no matter how homely the installation (and there were many cobbled together installations on display), merely meant starting it up, pulling a couple of levers and you were now pointing a completely different direction. This simple advantage multiplies that gun's effectiveness immensely.
We then went on to Wolfsburg for a tour of the original VW factory given by a buddy who was at the time the assistant to the VP of Technology for VW so was a really good tour.