Fire Ridge up the road in Grafton gets generally good reviews; not far off I-43:
http://www.fireridgegc.com/INDEX1.CFM?BannerPop=TrueThe Bog, also north of town, Palmer Design Corp., nice but full of wetlands and big, deep traps. Usually well-conditioned. Has its fans and detractors. Generally viewed as the best daily fee course in the area.
http://www.golfthebog.com/The same guy who designed Brown Deer Park -- George Hansen -- also did several other layouts in Milwaukee County that have some charm in an old-fashioned way -- here's a list of the county golf courses:
http://www.county.milwaukee.gov/Courses10292.htmWhitnall and Greenfield probably the best of the Hansen-era courses, although Dretzka Park (newer, from the 1960s) has its fans. All of these can get a bit busy, as they are true munis.
Out in Waukesha County, Naga-Waukee is a good bet, as its about two minutes off I-94 west of town (also can get busy, as it's county run):
http://www.golfwaukeshacounty.com/golf/proto/golfwaukeshacounty/I've always liked New Berlin Hills, a muni from the early 1900s in the nearby bedroom suburb of New Berlin, with grainy greens and some challenging holes, altho also some mundane ones. Nice clubhouse.
http://www.newberlinhillsgolf.com/Further out in the suburbs is Washington County, not that far from Erin Hills, an Art Hills design that's pretty wide open, and sits up on the land, and thus subject to some winds, which can make things interesting. Another county-run course:
http://www.golfwcgc.com/golf/proto/golfwcgc/A daily fee course I'm fond of, although it has some quirk and odd spots, is Kettle Moraine, about a 10-minute drive south of I-94 on the extreme western suburban edge of the area, nearly to Oconomowoc. Some interesting holes on some good land.
http://www.kettlemorainegolf.com/Hope this helps....