Originally Posted by
Aeirum
That's because you don't know what a nice designer suit is. The difference is subtle but noticeable. Materials are better and and fit is customized to you. Someone not looking wouldn't notice but someone in the know may appreciate the attention to detail.
I would agree that there's no upper limit on quality and fit for an interview suite. Just be careful straying too far from the baseline conservative design. For reasons I can't recall, I wore a green tie that I liked to regional interviews (back when those were not a slam dunk). By the time the majors called, and I had invested years of sweat, blood, and tears I didn't take any chances and did the red tie/white shirt thing.