I have about 18,600 miles in my Fizik Antares saddle. The first one I bought used from a friend that I ran on my Bianchi 928 SL. When that frame died I built my De Rosa and put a brand Antares on it.
Overall I love it. Fitting a saddle on my road bikes is one of the most important things I have found that makes riding comfortable. I have done rides as long as 127 miles and never had a problem with this saddle.
Super lightweight. Very comfortable for a racing saddle.
The new one I bought for my De Rosa the front cover came off in the first year of riding. I do not suspect this is common as my other Antares probably has over 20,000 miles and no problem. I wrote to Fizik and waiting to hear from them.
Cost. These Fizik saddles are expensive, but if you are racing or putting a lot of miles in and want a great seat it’s worth the money. List price is $400 US, but you can get one for as low as $319 US.
Overall: highly recommend.