The 185 kit will be a dog on the road. You loose toque low in the rev range in order to gain it later on. For day to day driving it will be even more jumpy that the standard car. It'll be a blast at the top end, but you'll have to work to keep it on the boil and the fuel economy will be pants

165 kit is the best balance of increased power without loss low down the rev range..... i'd stick with it!