Very Happy with the Katakis, coming from a pair of Katana Velcros in a 6.5 UK I bought these half a size larger, I am street shoe 7.5 so didn't downsize much. I could have probably gone down to a 6.5 uk to crimp my feet a bit more but they are broken in and don't feel baggy anywhere. They feel far more comfortable than the Katanas thanks to the cushioned tongue and they fit my feet very well, especially in the heel and you can feel the sole ******* right into the arch of your foot. They are a little more narrow than the Katanas so I do feel a bit of pain in my forefoot after a while. I mainly climb indoors and they edge very well so really like them when route climbing, the only negative is that they are fairly stiff so smearing while bouldering is not perfect although they are still fairly new, i have ordered some Skwamas to boulder in, I will continue to use these for top roping.