Whats the diff between the Samsung 700NF and the Samsung 755DF? Is it that one is dyna-flat and one is aperture grille? Whats the meaning and diff of these 2 terms? It says the 700nf is .25 dot pitch and the 755df .20; does this make a diff or do the technology differences between the 2 make up for that? Whats the Samsung monitor site? And do you have any better 17" mointor recommendations or other good brands?