Bricks, Masonry, Asphalt and Concrete - Foundation: Block or Concrete?

I'm in the planning stages for my next house. What are the advantages/disadvantages of a block foundation vs. a poured concrete one? There will only be a crawl space, no basement.

I haven't checked lately, but I don't think the relative costs have changed much. Blocks used to be cheaper, that's the main reason people used them. I used to have a house built that way, but it doesn't seem to be too popular.

Concrete needs to be formed - which increases the cost. But, if done properly, cast in place concrete is superior for use below ground level. If you want to have a totally dry basement, look into having a layer of styrofoam on the outside of the concrete walls with a six inch vertical layer of crushed gravel all around going down to the weeping tiles. This will add to the cost, but will virtually eliminate any basement leaks or condensation. Some jurisdictions have put this design feature into their building code but, bowing to the complaints of builders because of the added cost, have taken it out as fast as it was put in. If I were having a house built, I wouldn't have it done any other way.

Or split the difference, get concrete block, backfilled with concrete, all rebared to the footer.