I love them! Have had 3 pairs of v1. More natural feel than vaporfly, a bit more flex, less aggressive. Very light, disappear on your feet with just enough cushion and a pleasant, understated bounce. (similar to new balance fuelcell) Excellent for getting up on your toes in a final sprint. Not as cushioned as some supershoes. Close race fit in US sizing feels great for 8k and under, might want to go up half a size for races longer than 10k. As a couple shoe reviewers have pointed out, the UK sizing is already a half size up from US sizing. (I have 2 pairs from UK and one pair from US that comfirm this)