Campagnolo Chorus is a distinctive choice that appeals to riders who value Italian craftsmanship, unique aesthetics, and a different shifting feel than the more common Shimano and SRAM options. It offers both mechanical and EPS electronic versions, so you're not giving up modern convenience if you go this route. The shifting action has a satisfying, tactile quality that Campagnolo fans genuinely love.
That said, Chorus is less common in the pro peloton and at local bike shops, which can make finding replacement parts or getting service a bit more challenging depending on where you live. It's also typically found on Italian bike brands like Colnago, Pinarello, and Wilier, which limits your frame options.
Chorus makes the most sense if you're building up an Italian frame, you appreciate Campagnolo's heritage and design philosophy, or you simply want something that stands out from the Shimano/SRAM crowd. For most riders focused purely on performance per dollar, Shimano 105 or Ultegra will be easier to live with day-to-day.