toughest lock you ever picked

so whats the best lock youve ever picked??i dont mean a lock that just took you a long time,but the highest security lock you picked?like,did it have any security pins?what was the brand?did it have a sidebar?tell us your acomplishments

[EventualFate]

I have bumped Medeco biaxial M3. But I was probably most proud of picking my first Primus, because it was a pain in the arse for me, you almost need 3 hands. I haven't been able to get passed a mul-t-lock, but it can be done, I've seen it bumped before.