I find in the studio that at modest working distances for people, with a zoom lens, I really tend to use the 35mm focal length with a 7D, which has the same FoVCF as your T2i. This view is "full body" and it does tend toward "normal," without distorting features, like the face. Arithmetically, the lens Fl is 56mm.
Hence, I would find 28mm and 30mm a tiny bit too wide, and without care to place negative space around the model, one might unconsciously get too close to the model, which would result in distorted features in the view.
So, I'm wondering if the Canon 35mm f/2 is an option for you drmahuks? It is relatively inexpensive.