The new polywool khakis at the exchange are pretty good. Compared to the Abott's I got way back when, they're just as nice. Permanent creases and all, requires little maintenance.
The exchange SDBs are also nice. "Flying Patriot" or something. They also have a "slim cut" or something, which looks nice.
I will say however, the Abott's chokers are worth the money. I got them tailored a little more after I received them in the mail, and they looked awesome. Then I somehow lost them in a move and bought the exchange ones. They are....crappy. Velcro collar, tough to tailor, etc. Just my personal experience.
BTW, depending on what community/squadron you end up in, how often you wear flightsuits will vary. Be prepared after you finish the FRS to buy a 2nd set of khakis. There was even a VP squadron a few years back that wore aviator greens instead of khakis.