たとえプロといえども — といえども reads more classical than とはいえ, use accordingly

Small register note: といえども and とはいえ both mean 'even though/although,' but といえども feels noticeably more classical/formal — you'll see it in speeches, legal text, or old-style writing ('たとえ専門家といえども間違うことはある'), while とはいえ is the more everyday-written default for essays and news commentary. If you're writing a casual blog post, とはいえ is the safer choice.