Yes Naperville is a very nice community as someone posted earlier, however Naperville holds VERY high price tags on all of it's homes especially as it was named the most desireable community in Illinois to live in a year ago.
A couple of towns to consider where you can get a REALLY nice home for about $350K is Orland Park or Tinley Park. Both towns are easily accessable via freeway or rail (metra). Orland Park holds a recognition of more prestige, however in recent years, Tinley Park has rapidly gained ground on Orland Park when it comes to higher level housing.
Orland Park and Tinley Park both fall into the
District 230 school district of which is excellent and known for superiority in both academics and athletics. Orland Park is home to two major shopping malls, hundreds of restaurants, workout facilties, water park, great public facilities, and tons of parks. Here is a link for you to check out.
Village of Orland Park
Good Luck.