Should I expedite by mail or renew online?

Quick question guys. I have a trip to Toronto coming up September 2nd. I Unfortunately realized my passport expired June of this year. I wanted to know if I should pay for the expedited by mail option, or if I should try my luck with the online process. Everywhere I've read online had people saying they did the online application and got their new passports within like 3 weeks and if thats the case id rather do that than pay the extra $60 to expedite, but Im also nervous about risking it. Any input would be appreciated. Thank you.