I've had my Fit for about a week, and I have to say that I love it. It's a lot of fun to drive and unlike other cars that I test-drove, the Fit has excellent visibility. It feels solid and secure on the road - I'd swear I'm driving a much bigger car. One of the biggest draws for me was the flexibility in space that the car offers - those magic seats are fantastic! I'm very happy with my purchase, and I'd recommend it to others. In fact, my partner is thinking of trading his 2000 Accord for a Fit.
Magic seats, comfortable steering wheel, visibility, radio/stereo, fuel economy, appearance. The seats are higher in the Fit than they were in my Civic - I like sitting higher.