Indeed. It's hard for me to pick one but Red Psalm is certainly one of his best. It garnered Jancsó the Best Director award at Cannes (incidentally, Tarkovsky's Solaris, which was also part of the competition, won the Grand Jury prize). The Hungarian master is still alive and well and has continued making films but not much has been written about them. It's likely that they aren't as accomplished as his '60s and '70s work.