I think that Accenture Management Consulting is the superior choice. It will open the most doors in the future, including business school and client-facing consulting jobs and top industry jobs after business school. However, how "prestigious" this industry job is also a factor. Are you referring to product management at Google or Microsoft? If so, I would personally still choose Accenture (MC) but agree with RL that your choice is dependent on your goals after business school.