My father really likes Hart Schaffner Marx. I particularly like the HSM pants he has. HSM sportcoats/suits(from what I remember of my father's) are nice but not at the same level as Oxxford. HSM and Oxxford are both made in Chicago.
I have 2 pairs of their wool trousers that you'll find for $120ish in Hechts, Dillards, etc. The cut is definitely 'middle aged banker' but they are well made and look good to me. I would get more but I've got enough pleated. High quality, flat front 100% wool trousers are tough to find a deal on (at least for me so far...)