Lightweight crank pulleys?

[Kracka]

I've been doing a bit of reading on lightweight crank pulleys lately and am finding conflicting information. Some of which says they're a very bad idea since they can't absorb any of the noise/vibrations but other info stating the stock pulley with rubber ring does nothing more than try and quiet down engine noise (it is called a harmonic damper after all). I know underdrive pulleys are available too but I'm not really concerned with them, mainly just looking for info on solid aluminum vs. dampened (stock or Fluidampr for example).