I purchased my 2006 Honda Civic Si on 12/23/2005. I was going to purchase an S2000, however, the Si is very comparable in performance, but about $15,000 less. Very fun to drive! Very comfortable! Great visibility! Great design of interior with many storage compartments! Stereo is superb! Handles as well as much more expensive sports cars at a fraction of the cost! Love it!
My favorite features: 1.Engine/Transmission. 2.Stereo. 3.Interior design. Also, love the exterior improvements for 2006.
At this point, I have no suggestions since I've only owned the car for a week.