Cassini-Huygens was far more impressive as a technical feat than both of the Voyagers ever were, yet it is basically forgotten about today.
I do not believe doing fly-bys and reaching Solar escape velocity is particularly impressive. There was no intended direction, and reaching a stable orbit around Mercury requires a lot more efficiency and planning to do. People will blabber about the RTGs lasting 50+ years, because Pioneer 10/11 used an older design and crapped out far earlier. It really does not take much electricity to send a rudimentary heartbeat signal every so often.
Huygens was the only landing ever accomplished in the outer Solar System, and it was not even intended to last more than about 3 minutes after landing, yet continued to transmit data for 30. It also had to use the Cassini orbiter as a relay, which is far more difficult compared to a shithole like Mars. And you know how they ended the mission? They sent it inside the rings and eventually it exploded in the cloud tops. Maybe I am retarded, but this is tasteful in comparison to the naked ape art on the Pioneers and reddit-tier "records" on the Voyagers.