Not actually got around to readin or running that one yet. You intending this to be a one off or the start of an ongoing campaign?
If it's a one off and you don't mind killing characters then Night Train is very good. Sets the feel brilliantly and can certainly be a challenge to starting characters.
It can be the start of a campaign too. Either give the players pre-gens or get them to do quick characters, then throw them into Night Train. When the dust/blood settles they can either keep any surviving characters (although I'd let them make changes) or create new ones from the towns survivors. They then have a feel for the game before getting stuck into their characters too.