This is my first pair Saucony running shoes.  I have a running friend that's been wearing them for years and loves the brand.  Both of my feet are flat, and the Omni was recommended to help prevent injury and provide the stability needed for running/jogging. I tried on an 11 in the store, it was ok, but thought the 11.5 would be a better fit.  They felt a bit stiff with my first run on the treadmill, but felt great on the pavement.  They arrived 2 days sooner than anticipated.  Great shoes and I'm very pleased!