How useful do you find the Di2 wireless unit? Is it a worthwhile upgrade?

Equipment
3

For me the ability to switch computer screens is a big advantage so I def enjoy mine, though it’s slower to respond than if I just press buttons on the unit itself. Being able to change shift speed and how many shifts are done when holding down the button is cool too. I’d say it’s not the worst investment you could make but definitely not a “must have”