Since you are comparing almost the same year models, the Galant (2.0l up) line of Mitsubishi has more power than the 1600s Civics, 323s of Mazda and Sentras of Nissan. Since a Galant is heavier you'll get a more comfortable ride (relative), a more powerful engine which could result in a higher fuel consumption. Maintenance wise medyo mataas siya maintain but in terms of riding comfort and engine power lamang ka dito.