Wedgie does sound a bit middle-school locker-room'ish.... I hadn't heard that the SD60M's were bad riding, but that they will pull almost anything shouldn't surprise me.
I heard that the GP60Ms rode roughly because they were too front-heavy. I also heard that SD60Ms ran well even on a couple occasions when they had to assist/substitute for Amtrak power.
I didn't notice if anyone had posted any 70MAC photos yet, but here's one... http://www.railpictures.net/viewphoto.php?id=175779
I caught an Older GE Swoosh yesterday at Fullerton. I was up on the walkway, so I couldn't see the trucks which is the quickest spotting difference for me. I'll see if I get off my butt and put the pictures up.
Thanks for the link Doug - I like new scheme on the SD70MACs! Here's a couple of shots of the Yellow Swoosh GEVO I took in Winslow on the 21 April 06.