My priority is to increase lightness. Right now, I have a Senicx PR1, which I think weighs around 900g. And I want the whole thing to run smoothly, without having to constantly adjust it. It'll be a 50-34.
I also want to change the cassette to a 12-speed, and I'm torn between an 11-34 Ultegra or an ultralight ZTTO from AliExpress.
Thanks.