I was not completely happy with the stock Bitubo/Marzocchi setup that came with my EVA so i had it replaced with the Ohlins package. The Ohlins was a big improvement, but I had difficulty setting up the front forks. I had a minimum of 35mm sag with the preload dialed to the limit. I discussed with my dealer and they sourced replacement springs (12 instead of 11.5). This seems to be just what was needed, the bike is now much better under braking and feels like what I am used to from my other bikes. If you decide to order the Ohlins forks, I highly recommend you consider ordering with heavier springs than what is normally shipping from Energica.
Don