hey deekay, I agree with all your feedback. I recently removed the Eibachs and went back to original cup springs for the same reasons. I did my first trackday last week and it was fine for slow corners (albeit could do with better traction) and found that body control was not enough at high speeds 120+kph, with too much diving and rolling at the front axle.
With H&R I only have experience in my 2018 V40 and they're better than the OEM sport chassis springs, although they sit too low at the rear for a family car. I say better because balance is less understeer and body control is much tighter without compromising comfort noticeably.