Poland also has most of its fighter jets from Germany
If you mean MiG-29s, 22 planes in 2003, they never made "most" in Polish air force. :) I didn`t mention them because they were already obsolete at the time and in poor technical condition. Germans simply got rid of them for free, so it wasn`t anything to be grateful for.
While Leopards were in good condition and the German Army could still use them. I know today`s opinions about those gift Leopards - some German military experts regret that their army was so generous for Poland.