Fizik and Giro run a half size bigger than Shimano. I'm a 44 in Shimano and wear a 43.5 in both Giro and Fizik (and a 43 in Sidi) - with a pinky's worth of space in the toe box. Street shoes I wear a 44 in Adidas.
I have Giro Sentrie Techlace currently. The Techlace system takes a bit to get right - you can't just jam it closed like a velcro strap - you need to adjust the laces then close it with the velcro tab. The swap-able arch support is great though.
John
Last edited by jad3675; 09-12-19 at 05:44 AM.