Diana airguns made in the old factory are perhaps the best magnum springers in the world and a custom 34 would also take some beating, but since GSG bought them and they moved to a new factory there are reports that they are only assembled in Germany.
My personal favorite is the old factory mod 460 as its light weight and better constructed than the sidelevers and looks a bit like a mod 46
Well according to the Diana rep at the Shot Show on YouTube, all the premium spring piston Diana's are still made and assembled in West Germany.
Their new PCP range is made in China by SPA, but they look very nice and are not over priced.