Matt and David are back with a new installment of Buy or Sell. They debate the merits of data versus hands-on testing in shoe reviews and make the case that the era of 35-39mm being considered max cushion is officially over. They also look ahead at where the industry is heading — from the coming wave of 50mm+ shoes to a future with three tiers of racing footwear and much more. Want your debate featured on the next Buy or Sell? Email us at doctorsofrunning@gmail.com Get your DOR Merch: https://doctors-of-running.myspreadshop.com/ Rabbit is the presenting partner of our podcast. You can use code SPRINGDOCS to get 10% off your entire order of $50.00 or more. Note that the code is limited to one use per customer and can't be combined with other discounts. The code is active from 1st of every month to last day at 11:59PM PST, but don't worry because we'll be bringing you a new code every month. Our In For Testing segment is fueled by Skratch Labs! Get 20% off your first order from Skratch with code: DOCTORSOFRUNNING! https://www.skratchlabs.com Chapters 0:00 - Intro 2:40 - In for Testing: Powered by Skratch Labs 10:04 - Buy or sell: getting rid of water cups at races 14:28 - Using data over testing for reviews 21:18 - Squeezing midsoles & bending shoes to determine how they feel 25:04 - Using durometer to determine midsole performance 29:16 - 35-39mm is no longer max cushion 32:54 - We will have many 50mm+ shoes in the next two years 37:12 - Brands will start to have 3 tiers of racing shoes 44:22 - Super trainers are better than training companion shoes 50:54 - Super shoes decrease injury risk 53:19 - Super shoes are bad for the Achilles tendon 1:01:38 - Wrap-up