After going through two pairs of Reef Fanning sandals over the past few years, I decided to give these a try.  The are without a doubt worth the extra money.  To me Reef have the most comfortable sandals out there, so I wanted to stay with the brand.  I'm a bigger guy and I need comfort and cushioning, these definitely have that.  Fannings are great sandals, but I will never go back to them after wearing these X-S-1's....amazing.