Companion rec

https://preview.redd.it/g3tywsmrr91g1.png?width=1816&format=png&auto=webp&s=98a812a2f57ba70e3e41af66bba2eea501a5fd04

so i started playing again after 3 years and realized when i was active i was neglecting companions, so i was hoping somebody could tell me if having a good companion makes a big difference and if so, some recomendations, this is a Carrier btw, a normal one, not a prime, just using because my acceltra build uses way to much ammo.