As far as Setting Sun goes, you really should try to check it out, those maneuvers are awesome and let trip do cool things. The school is focused on throws and counter attacking and using your foe's power against him. At level 1, it gets a really cool Counter Charge maneuver to disrupt a charge with a throw. The strike maneuver throws basically all let you use dex instead of str and send the opponent a distance away prone for some damage. Some let you throw him into another foe to hurt and trip both. By level 6 maneuvers (level 11+), you've got Ballista Throw where you're basically using your trip victim as a weapon for a 60 ft line attack. Yes, you read that right. By level 9 maneuvers (level 17+), you get Tornado Throw, which is crazy awesome or just plain crazy, depending on who you ask. Lets you move double speed and every ten feet you move, you can hurl your foe for damage, with the trip bonus (and damage) rising with the amount you've moved. Lets you hurl the same poor guy repeatedly, too.
Aside from throws, it has lots of great counters, too. Like one high level maneuver to send a foe's attack back on himself (Fool's Strike). The first level stance lets you ignore difficult terrain and actually get a bonus for tripping people when they're on it, encouraging the use of terrain to your advantage. Just all in all, great discipline.
