I own a blue Stilo 3dr Dynamic and I think it looks fantastic!
Performance is swift, not excitingly fast, but quick enough for a 17-year old I suppose!
Ride comfort is excellent at any speed.
Road noise is reasonably well suppressed although noise from the wide tires are noticeable on some road surfaces.
Seats are very supportive and pretty comfortable - got a bit of back ache on a 90 minute trip, but realised I wasn't sat square into the seat.
Fuel consumption is excellent - costs less than £15 a week for the daily 20 mile round trip to college and various other errands - which includes a brief 60+ MPH country road blast.
Cabin quality is fine - the main dashboard material is particulary nice, but the radio and door control plastics are a bit second rate. The rear light and passenger air bag switch have unclipped themselves and have no willingness to go back in!
The boot is plenty big enough for what I need it for and includes a ski hatch in the rear seats which will certainly be ideal when the winter season begins! :D.
The standard radio/CD system is fantastic - sounds twice as good when the engine isn't on for some reason.
Overall I'm very very pleased with the Stilo - I bought it for a pretty good price and for the money it's far superior inside and out to the Focus and Astra!