I purchased the Sidi Flex with the removable sole 3 months ago. My intial reaction was that they required considerable break in time. I came from some 4 year old Tech-7's that required little or no initial break in, but these new boots took about 8 rides to start breaking in. I do have a little trouble in feeling the brake side lever, but have adapted my riding style and ended up using my whole leg to brake instead of pivoting off of the footpeg. A few weeks ago, I was about ready to give up on the boots and even let some friends ride with them to see if they were interested. The typical happenstance was that they would stall their bike due to dragging the brake into the corner. Over Thanksgiving, I rode about 7-8 hours and was able to finally get comfortable with the boots and can actually start appreciating them more. I did hit a stump with the front of my toe and didnt feel a thing. Protection is waaaay up there. I think that now that they are getting broken in, I will like them a bunch. To summarize, mine seemed to require more break in time, but are worth the patience in doing so.