Some week ago I've tested a new S1 pro 4.4 2020 against my old S1 pro 4.4 2019 and a 4.4 Blade 2020.
The S1 pro 2020 is more powerful than my 4.4 pro 2019, more stable in profile under strong gusts, with an amazing and superb early planning. But I find my S1 pro 4.4 2019 softer, definitely softer feeling sail.
Blade 2020 is another superb sails, soft, powerfull, super stable, with an impressive top end speed. Extreme ease rigging, you can't go wrong it's always good

, Tuned or untuned the blade is always very nice. You will only need a long extension with this 4.5 Blade 2020.
We could not test these sails in real waves because the conditions were stormy, we were in the water with the 3.6 S1 pro 2018 overpowered.
Now we are in Red Area due to Cov19 and I don't kow when I will can go on the water all is forbidden