I use both, and I use them for animations.  When it comes to animating, a conforming dress will not do! Pants.. Absolutely.  I use dynamic for skirts, loose tops, capes, dresses and so on.  I'll use conforming for tight tops, pants, shorts, and gear.

I cheered out loud when I discovered that Poser introduced dynamic clothing.  There is a learning curve to using it with disired results, but for animations.. Nothing beats dynamic.  I found that the best way to sink your teeth into dynamic labing is to start with the HiRes Tablecloth.  Its easier to track and learn about the diversity of the dynamic cloth lab and all its settings. 

A neat trick to try is slightly increase the bulk/weight of your model and run the process of the dynamic animation. Then after the calculations are finished resizie your model back to its (reduced) size.  The dynamic cloth retains its dynamics and you won't have to deal with the poke throughs.