I've been wearing Brooks Pure series for a while and was thinking of switching to ON shoes for their overstated "comfort". Was wondering if it's that much of a difference. They look nice. I have low arches and run in a 4mm drop shoe, most of the ON shoes I've seen are around 7mm, so I don't know how much of a difference this will reflect in my runs. I'm still new to the shoe "biology" and not the most familiar with everything to know about shoes. Any experience with ON running shoes or transitioning from 4mm to 7mm if it's good, bad, indifferent. Thanks!!