The Triumph 17 is a phenomenal shoe. It's soft - so soft - and breathes really well. I was a big fan of ISO 3. I loved these laces and the shoe was a good mix of Everrun TPU and firmer foam. I skipped the ill-fated ISO 4, but I liked ISO 5. The problem was the abundance of Everrun TPUs. It was essentially the same shoe as the Saucony Freedom, only slightly thicker to create a larger "pillow cushion". The effect was more rebound than press. Triumph 17 fixes all of that. Saucony opted for a moreโฆ