What is the best groupset over the past 25 years (1998-2023) in your opinion?

[winjohn]

Dura Ace 7800 for me and the missus. Her Trek 5500 and my 2007 Tarmac Pro both run it and it is flawless.

 

[grantoury]

I actually prefer a nice track wheelset with a freewheel single cog. Great power transmission on the flats.