I like to rotate different shoes for my different runs. I currently use Saucony A5 for track and races and I'm very happy with these. I have Merrell Mix Master for road/light trails and Merrell Dash Glove for shorter road runs. Happy with all these but sometimes after tough track sessions when I have an easy recovery run I feel the need for something a bit more protective and maybe cushiony for my aching legs and feet....? I was considering maybe Saucony Virrata or Brooks Pure Drift. Does anyone have experience with these, or maybe have other suggestions? Also how do Brooks sizing compare to Nike and Saucony? I take UK 6 in Nike and 7 in Saucony.