Have you ever tried modern groupsets outside of the big three? (Shimano, Campag, SRAM)

[otherself]

I had Microshift Centos 10 speed and was impressed with it. No cranks or brake calipers though - they were aftermarket made by Fulcrum and Tektro.

Currently have Sensah Empire on my Chinese Carbon bike but don;t have enough miles yet to judge, but it shifts well enough and is a bit lighter than 105 and over half the price.

 

[d8mok]

My wife has Microshift on her Topstone 4. It’s the worst groupset I’ve used in the last 25 years of riding.

 

[Polkey]

I've used Microshift Bona in the past and it was excellent although the front shifting was tricky to set up right, I've also used Sensah for a couple of years now and like it although I'm now trying out Ltwoo which works well so far, although I prefer the Sensah shifting so far.