The Amsterdam does not have a full chaincase. It's a open back chainguard styled to look like a chaincase.
The Giant Suede Coasting of course has Shimano's auto-shifting 3-speed Coasting geartrain, not a singlespeed coaster brake.
The Schwinn Coffee (and Cream) has f/r caliper brakes, not a coaster brake.
HTH,
TCS
Schwinn's website shows the Coffee(and Cream) specced with f/r calipers AND a coaster brake. Weird spec.
http://www.schwinnbike.com/products/...il.php?id=1027