I just opened a pack of Super Shave X blades that came as complimentary with a Connaught order.
So far have had 2 very good and very close shaves out of the first blade.
Strangely, it felt very smooth but not very sharp during the shave (like a Derby Extra can do) but afterwards it became apparent that it is a capably sharp blade.
Shall see how many shaves i get out of each blade in the pack, but so far very impressed.
Definitely much smoother than my usual Astra SP.