There's a third type: smartprops. Mainly used for small clothing items that are rigid or semi-rigid. Most jewelry (rings, bracelets, earrings) is in the form of smartprops. Belts and shoes also come in the form of smartprops.

The different types have different advantages and drawbacks. For example, smart props are good for rigid or semi-rigid attire, they do not deform when a body part bends, where as a conforming clothing item WILL deform - it bends with the body part.
Conforming clothes work well with tight fitting clothes, or clothes that are supposed to be fairly rigid. Most shoes and boots are conforming clothes, so are gloves.
Armor, medieval or otherwise, is also an area where conforming clothes shine, although I have also seen plate armor consisting of series of smart props. 
Dynamic cloth is at its best with flowing, loose-fitting clohtes, such as skirts and dresses. Loose-fitting blouses also qualify for being dynamic cloth. 

The beauty of the system is that it is possible to combine all three types in one piece of clohting. For example, a dress with a tight fitting top and a loose flowing skirt, and rigid metal ornaments hanging from the belt. The top part would be conforming (with a bit of luck the creator made it a "superconformer", a conforming clothing item that automatically assues the morph settings of the figure it is conformed to), the ornaments would be smart propped to the hip or abdomen body part of the dress, and the skirt part would be a body part that must be "clothified" in the Cloth Room.

I can highly recommend learning to use the Cloth Room. It expands a lot of what you cah do in Poser itself.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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