I'm also about a US 10.5 but "low volume" (narrow feet, low instep). I went down to 9.5UK for the Wilson. They were a bit tight at first but are breaking in well. I don't have any C&J or Plaza last to compare, but I can tell you Carmina and Vass U last sizing if helpful. I'm also a 34 and went with 90 on the tubos. Great fit.