When the Galant first came out, it was a pretty good choice compared to the Accord and Camry....provided you didn't mind eventually a little smoke on start-up on from some bad valve seals from it's 4G37. The KM175 transmission has a little sketchy reputation, But I've seen quite a few live long lives.
It was competing against some tough competition. The redesigned 2004 Galant was already behind the Accord, Altima, Camry, and Mazda6 when it was introduced. And there it stayed. You could get a larger engine than any of it's competitors (3.8 V6 vs 3.5 V6es and 3.0 in the Mazda) but it didn't provide any additional performance vs the others. And, it still had a 4 speed automatic.
I'm not sure if the latest Galant has the Mitsubishi variant of the GEMA 2.4 or a 4G69 "Sirius" engine. If it has a 4BXX, it will be similar to a Hyundai or Chrysler. If it has a 4G69.... well, they're not necessarily bad engines. Just well out of date.