What's a good handheld map for St. Loius, MO?

I’m going on a trip there and I need a solid map to tote around with me so I don’t get lost. I’m thinking of a particular map brand, but can’t remember the name. So, really, any good map will do. Also, a GPS won’t cut it because A_It’s too expensive and B_It’s a lot more likely to get stolen.

Features I need:

Detailed enough to get around walking
Metro
Parks shown

Features I wouldn’t mind:

City highlights (concert venues, popular food, etc)
Compass

…Incidently, if you’re from St. Louis or frequent the city, what are some of your favorite places? Budget is essential.