Mercedes W 108 280 S or 280 SE

Hello, I love it with a W 108 and don’t know if I should give preference to the carburetor version or the injector (each 280er). I heard that the carburetor should be smoother than the injector, besides, a new injection nozzle should not be cheap, on the other hand, who can still adjust double carburetor today? Can you give me an additional tip if the automatic is recommended, or should it be a switch, it comes to me the reliability and repair-friendliness on, otherwise I would definitely take the automatic version. Thank you and good ride Gerd