I just completed my first shortrow heel, from the GMS Maureen Socks pattern. I have to say, it fit a bit odd - seemed smaller than the factory sock, but I suspect that was due to human error - I was probably knitting more tightly at that point than I should have. There were also gaps on the edge of the short rows - it made an almost openwork pattern diagonally. I followed the instructions, so I'm thinking it must just have been an issue of tension that I need more practice with to overcome.
Apart from that, I really enjoyed working on the short row heel. I like the smoothness of the transition, and knowing that my colorwork will not be tweaked by insertion of a chunky common heel.