After two years of driving, I compare the Si with few small sports cars. The retail price was tuff but it was cheap club membership. I have driven and ridden wheeled rockets from Kawa H1 to a 500Hp Chevelle 396 and this is the best combination of control and power that I have ever had. Highway driving is so smooth and artificial limits are an issue. The key to satisfaction is keeping the RPM at 4k with the fantastic 6 spd tranny. I regularly get at worst 26MPG and at best 32mpg at 80+ mph. 350 watts of music drowns out the background road noise. The pavement surface has a lot to do with ambient noise level.
Overall Reliability. Smooth reliable power above 4k RPM. Great stereo, Great styling and a bucket seat for holding your bod in a position to control the car. This car is designed to be driven not operated.
Road noise on rough asphalt is no fun. AWD would kill mileage but give the car slot car handling.