Koni or Bilstein ? Options

[Fazasport]

I am looking to replace the rear shocks and front strut inserts on my 1970 914. I will be using the car for tours, rallies, spirited driving and maybe an occasional Autocross not for track work. I am interested in a firmer ride than stock but not a harsh ride. The car does not have front or rear anti-roll bars currently.
If choosing between Koni or Bilstein which would provide the LEAST harsher ride quality?
I will also replacing the rear springs. With that in mind, should I stay with the stock 90lb springs or substitute that 100lb springs from the 914-6?

[tygaboy]

I don't mean to get deep into suspension geek mode but as a point of potential interest: The Koni Sports are one-way adjustable for rebound only. So unless you re-valve them, you get the valving they come with. Meaning your ride quality is down to factory valving plus your chosen spring rate. That also implies that if you opt for spring rates "outside the normal range", you're headed into under- or over-damped territory. Not to scare you away from Konis as that's true for any one-way adjustable damper.
Just something to be aware of as you're setting your expectations.

And yes, I have those same shocks on my LS car. They work fine but where I typically drive, the roads have lots of chop and sharp-edged bumps. So on the Ferrari swapped car, I'm going all in on 3-way adjustable: high- and low-speed compression and low speed rebound. I'll be working with a suspension tuner, providing unsprung weights, corner weight and suspension motion ratio information so they can work out specific valving and spring rates for the car. Yes, complicated and more costly but I want as sophisticated a ride quality as I can get. I'll document all this on the Ferrari build thread and report back on "is the juice worth the squeeze?"