hi notwal,
Supersonic's are very fast but they don't last very long. On average I only get around 1500kms out of them until i get problems. Mostly punctures on the rear wheel as it wears faster. I've used 3 pairs and the 4th is on the garage shelf for special occasions.
It may have something to do with the thin Maxxis featherweight tubes i use with them or the roads I roll on.
I'm currently using Schwalbe Ultremo ZX, only had them for 500kms so time will tell if they're any better. They're 25ish grams heavier so hopefully they last longer. I did 150kms on them in 35 degree heat and now the white Schwalbe labelling on the side wall looks burnt and discoloured.
To be honest I don't race so I can't tell/feel how supple, sticky, faster, low rolling resistance, puncture proof or lighter each tyre brand is.
I generally go by how sex they look on my bike
I do really like the Vittoria Open Corsa Evo CX in the wet because of it's "file" tread pattern. Shame they're 218grams (my scales).
I'll probably go back to them.
Hope that helps mate