Personnally, I don't like Brom's and Elmore's works. Their technique is good, even excellent -- they don't draw things that are just plain ugly and misshapen, like Kaluta or half the "artist" at White Wolf (*cough* Cobb *cough* Davis *cough*) do -- so that's not the point.
But, I ain't fond of the SM style of Brom; and find Elmore's portraits too static, his characters are always posing for the photographer.
Oh, and Elmore lacks fantasy. Take the MM nymph, for example. She's a beautiful (yet frozen) human woman, but does she looks like a nymph ? No. She don't looks fey at all. DiTerlizzi's nymph, in 2e, sure had this je-ne-sais-quoi that made her a fey.
My fav D&D artists would rather be Wood, Lockwood, Swekel, DiTerlizzi, Bader, and to a lesser scale, I could cite Sardinha, Despain or Cavotta. I also liked about 5% of Reynold's illos.