Although I haven't owned my integra for long, I have absolutely no complaints about it (apart from the small center console). It handles great, as well as having impressive performance and awesome reliability!
I love the performance, I would definitely recommend a standard though. At first I wasn't very fond of the headlights, but they have grown on me because of they distinguish the Integras from most other cars.
I wouldn't change much. All I would suggest would be possible ground effect and spoiler. Performance parts are nice as well!