There's always a lot of talk about the cool spikes that top runners wear, but does anyone know what those same athletes wear for workouts and distance runs? I've seen some pictures of the Salazar stable training, and for workouts they were all wearing the Katana II flats (the 3s weren't out yet) and I was pleased with this, as I'm a big fan of the Katanas. It got me thinking, what do other athletes use for trainers/flats? Info is appreciated, but pictures speak louder than words :D