Top tier vs lower t14 with full tuition

Looking for wisdom from actual lawyers instead of law applicants. My goal is biglaw for a few years, at least. I’m choosing (at the moment) between a top school that I would have to pay a lot for or a tuition free lower t14. My instinct is to graduate debt free. Would there be any tangible career difference (in firms, not in clerkships or academia) between schools at these respective levels? Also, is biglaw as guaranteed as the lawschooladmissions people make it seem from schools like northwestern or duke? I don’t care about prestige, just how the school will affect my career.