Fizik saddles work on the principal of matching saddle style/design to body flexibility.

The Aliante rides kinda like a Regal and supposes that you are more upright and have limited flexibility.
The Antares is flatter and longer in the nose and assumes you have mid-level flexibility.
The Arione is super flat and supposes you can touch your palms to the floor FWIW...


I have an Antares on my Reus and it (along with the crit geometry) is fine up to about 40-50 miles IMHO.

I would try an Aliante Gamma, flex, k:ium rails FWIW...