There are a lot of other variations in the Hill grip besides those three to also consider. Depth of grip can and does vary based upon the preference of the person who originally owned it. Also you can get a narrow or wide waist, also based on preference so your going to find numerous combinations of all these, plus the takedowns are different still. After shooting many I have settled on a wide waist, 2" deep straight as being my prefered style, with the slight dish coming in second. If your interested in trying a narrow waist, slightly dished Wesley send me a pm as I have a very nice one that I'll make you a deal on.
Ken