Increasingly I am working closer to the sitter or model. I am using a 50 (on 35mm) more and more as my portrait lens because I can work close. I find it makes for a much more within-personal-space look (expressively - who cares about foreshortening). I would go with a 35 or 28 and get even closer but you can only say "who cares about foreshortening" up to about 1 meter (3 feet)! If I could get the viewer to stay .3 meter (a foot) from the print or monitor I would shoot at that distance. Sitters/ models seem fine with working close.