You will not be happy with the Intrax. They are linear with a pretty aggressive drop. With the drop, they have to be hard so you don't bottom out, and since they are linear, they are hard from the very first moment of deflection.
You are really looking for mild progressive rate springs with nice, firm control from the struts. IMHO, you would be happiest with the BAT Euro handling kit, or with the BAT Euro struts paired with Eibach springs. You'll be comfortable, but the car won't be a slouch, either.
There are a lot of things that can ruin the "comfort" of a car. The obvious things like too-stiff springs is only one of them. Too soft struts (with stiffer springs) is another. Big heavy wheels is another.
