I don’t think it’s fair really to have a trainers that can help you run faster. Where is the fun on that? Running is about enjoying but yet competitive.
Running is a kind of sport to be enjoyed but not to be expensive. What is the point of having an expensive trainers if you don’t have the endurance and stamina. You have to have the physical and mental strength, you don’t need expensive trainers. Btw, I still do love my Asics Nimbus 20 they are awesome!!