I really liked the 1st Starship Troopers. It's up there in my top 10 B-movie list. Hell. Its low-rent cheesiness is one of the things that make it rewatchable every few years.
As far as space battles go overall, I'd say the King of the Hill fight would be between Star Wars & BSG (the intro battle in Revenge of the Sith & any given dogfight in BSG are head & shoulders above anything achieved in Starship Troopers.) Unfortunately, as cool as the 1st movie is, it just ain't realistically in the same league.