I got whiteline control springs all round at first, they have the same spring rate as standard springs, but they are shorter,
However the fact that they had less travel meant that they did make the ride harder, and my wife was preggers at the time so I sawapped the front springs for Tein Steck front springs which are 29N/mm (standard 35N/mm) and that restored the comfort (mostly) The forester ferries my wifey and babies around all day no bother!
I would recomend the whiteline control springs, I wouldn't recomend the tein springs, they don't match up the spring rates well at all, eg the Stech has harder rear springs than fronts!
The adjustability of the roll bar is great, on the hardest setting it does "wobble" when the inside wheel goes over bumps on back roads but it makes some difference to the balance of the car! No more understeer, It's just a case of finding a good compormise between comfort and handling, but very easy to adjust,
Dan