Which is firmer - Adidas Boston, SL20 or Reebok forever floatride energy 2

Haven't tried the SL20, but the Boston 9 is firmer than the Forever Energy 2. Boston is closer to the Floatride Run Fast in firmness and amount of cushion but closer to the weight of the Forever Energy. Forever Energy is more forgiving and bouncy for very similar weight. It is more of a do it all trainer and the Boston 9 is closer to a speed day trainer.

My guess would be the SL20 though since it is all Lightstrike EVA which is the firmer part of the Boston 9 and Adizero Pro.

Thanks!

I have the Boston 6 and the Reebok Run Fast 1.0 and the Forever Energy 1.0.

Boston the firmest. Run fast is softer but lighter. Forever Energy is the most cushioned but not by miles. definitely the least responsive.

Boston would be my favorite to buy again because I really like the fit