I recently traded in my ninth generation civic si for a 2014 5 door wrx...mainly because I will soon be a father (literally within a week), and needed a car with more punch and awd. However driving my wrx I'm able to see what I took granted for in the Si. The most noticeable driving feeling I would say is the transmission...the wrx feels like the transmission was made in the Stone Age compared to the smooth shifting six speed Si. Makes me curious to see if the factory sti shifter would improve this. My biggest complaint, and maybe it's something I'll get used to, is it fully getting in the gates with my wrx. What I do like about the wrx's transmission is how longer 1st is compared to the Si since it is a five speed, meaning I can hit 60 with only one shift, unlike the si which hit 60 in third gear. The raw power of the wrx and grip dominates the Si. However paired with a heavier rear sway bar like mine, helped the Si's understeer tenfolds during hard cornering, and matched with the light weight and higher revving (compared to the wrx) N/A 200 hp K24z7 engine made it a fun car to drive....although I wished the vtec engagement point was below 5k rpm. The Si had awesome gas mileage, I averaged 31 mpg (I do drive conservatively on the majority). Hated the wing though, it's nice to be able to see out of my rearview mirror now...I don't know how you STi guys do it. The interior was also very very nice in the Si since it went through a refresh after people complained about the cheap feel of the 12'...the car itself looked very nice too, with subtle ques to separate it from the rest of the civics, I LOVED the rear taillights on the 13+ models that reminded you of the older brother Accords....Now enough fluffing of the Si....the wrx like I said has a dominating feel during hard cornering. The acceleration feels incredible, and my main reason I love the wrx is that everything about the car feels great, and I do t have the urge to improve much else (I say that now)...the power is enough for me, the wheels are much more handsome than the Si, and it's a wagon. I am very happy on my trade, and wanted to share my experience with the Si.