I'm looking at a pair of these with the platform wedge sole, does anyone have a similar pair and are they comfy? [[http://www.birkenstock.com/gb/arizona-platform-black-birko-flor/1005074-0000000-0000000.html?dwvar_1005074-0000000-0000000_color=00001&gclid=CjwKEAjwppPKBRCGwrSpqK7Y5jcSJACHYbWYPJ0zBCkxLdwXZ1P1Rt2ojfkRvkIcxj5Ctbl5kB8hKBoCw-Xw_wcB platform ones]]