Jack Morefield, on dA as lostmyband, creates amazing portraits and landscapes using clearly-divided lines of color rather than the usual line and shade -- kinda impressionistic, but clearer. I love his work because he seems to paint the energy of a thing rather than simply the form of it. To me, that shows the interconnectedness of all things. ♥ I've only put in three of his works here, but do check out his gallery at the link above -- it's amazing.
As for plangdon, I love the sweet mood, lovely shapes, and soft light with occasional intense color. I didn't get to see much of hir work, but 'New Life' in particular stands out in my mind as a truly fantastic work -- the kind you never get tired of looking at.
Jack Morefield aka lostmyband:
(I found these on plangdon's account on dA, which has since been deleted, so I'm not sure of the artist's true name. If you know, do tell!)