Chris Swrote a review of Fi'zi:k Arione VS X Saddle on December 21, 2014
Familiarity: I've put it through the wringer
Saddles are a personal choice, so this saddle may or may not be for you. I bought this to replace a cheap Prologo Kappa Evo saddle. As saddles go, the Prologo was fine in many respects and I've ridden centuries on it. But in road race breakaways, where I would often be in the drops and needing every watt of energy, my lower regions would actually start to go numb from the perineum region being compressed. On the longer rides, even when not in the drops, my nethers would feel fairly abused. This indicated that I could benefit from a saddle with a cutout or at least a relief channel.
There are many saddles with the required features. The Arione has a superb reputation and many of my racing friends use the regular version of the saddle. If you don't need the relief channel, the regular version is a little bit lighter. On this one, my sit bones are perfectly comfortable and, because of the minimal padding and clean design, chafing hasn't yet been an issue. If I'm in the drops, I can still go numb; however, that's usually because I'm off-center on the saddle. I simply shift my perineum area properly into the channel and the problem goes away. Otherwise, I don't even notice the saddle--which is exactly how it should be.