(Advantages)     Disadvantages

Tricycle
Tailwheel
Front gear is prone to damage, even on good runways
Prone to nosing over and damaging prop
Increases drag
More vulnerable to cross winds
Heavier
Harder to handle on the ground, prone to ground loops on landing
More complexity if retractable
Can be hard to taxi - hard to see over the nose on the ground
 Not as good for rough fields as nose gear can easily break off