I read everywhere that .pdf is the way to go over .eps. However, when I use pdftex (or even latex) to compile documents with .pdf images, the images in the printed document are very low quality/blurry. Replacing these with .eps files resolves the issue when printed (though the documents appear perfect on screen in any case). This would seem to be why all journals only accept .eps images.
My question is, why do people champion the pdf over the eps in spite of the above? Alternately - how can I achieve perfect quality images, as I did with .eps files, using .pdf images (and pdflatex over latex compilation)?