I'm not sure what "samples" you "heard on Dime", but as an owner of a pair of low-cost stealth mics and a also recent owner of a pair of DPA 4021's, I can assure you that the difference is quite striking.
If you would like to sample some fine DPA 402x's recordings, search for "Scott Brown" at archive.org, or you can visit my site linked in my signature and sample the Roger Waters, White Stripes or Fiery Furnaces recordings I've made in the last few months.