I am a casual runner (10 miles a week) and flat feet. I have used the 1123 for three years and loved them. When I went to buy another pair and saw they were discontinued, I went back to a local New Balance store to find a replacement. The sales rep showed me these as the updated 1123--lighter, thinner heel, wider toe, and shorter tongue tab. They run 1/2 size small so I got a larger size. Walking around the house, I loved the new fit and lighter shoe. But, running in them the next day was a disaster. Within ten minutes of a slow pace, my feet were numb with each step. There was virtually no cushioning--it felt like running in my dress shoes, just without over-pronating. I could feel every little pebble I ran over and, by the end of two miles, everything from my heel to my toes were throbbing and I had a blister on my left arch. My local store would not take them back as they were run in, but New Balance online said I can return for credit (so much for "shop local"). They suggested pressure relief insoles. I ordered them from New Balance (so I can return), and, while they do provide more cushioning, they raise my foot up too high in the shoe so that the heel no longer fits properly. And, finally, the new "improved" tongue digs into the inside of my ankles, bruising them, and the insoles made it even worse by pushing my foot into it. I thought I would give them one more try today (third times the charm?) with the insoles repositioned and they never made it out of the garage--too uncomfortable.