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

[Canuk]

Yep, 7800 triple version with long cage rd. Works a treat and can take big ratios in its stride. Don't bugger up the rear derailleur though, cos they cost...!

 

[peetee]

7800 for me. I managed to bags a few groupsets when they could be bought for decent money. Now people are asking 50% more for them.
6600 comes a close second, especially the blue-grey SL version which looks gorgeous. 4600 Tiagra is good too. I prefer the shift on these over Dura-Ace as they are a tiny bit more weighted so it’s less easy to accidentally double shift.
I want to like Campagnolo but, to be frank, it’s been pig ugly for years.