looking like my next IH purchase. I am on then fence with how to size due to the stretch. I am a true 29, should i buy a 30 or go with a 29 and let them stretch?

Hi guys.. new to the forum, been lurkin for sometime though.. currently live in germany but from the states

hi guys… new here just recently picked these up off selfedges sale (first pair of IH).. look forward to getting them in