I have been looking at that selection of portfolios, actually I have visited just the 20 firsts. Between them I would recommend the works of Joey Lawrence and Martin Klimas. Between the rest you can find very good jobs but they have so much digital retouching or composition for me.
From the job of Joey Lawrence i remark the portraits. The Martin Klimas photos aren’t so nice, actually i didn’t like them at the first look. What i like of them is how the time is stoped.