I've had my fn2 for 2 years now, all in all, I'm still very pleased with it, few niggly things which has bugged me, are cheap interior materials and build, probably due to the hard ride, the interior can rattle/creak badly! I've had various issues such as glove box, dash doesn't seem solid, and a awful rattle behind drivers head, possibly headlining or B pillar, but seems to have stopped for the winter, it's just when it's warm outside this does it so a strange one.
Paintwork is thin, so plenty of stone chips.
Sound system in my opinion is fine, but I don't play loud music, with the windows down and my arm hanging out. I prefer to hear the engine!!
The ride is hard, I've heard eibach springs will help a little with the crashiness.
Though these sound like a few negatives, this is purely my opinion, the engine is great, I've not heard of one major engine problem yet. VTEC is awesomely addictive and is such a fun car to drive.