The wave Alchemy are the heavier version of Wave Inspire. I had the Inspire 5 and I loved every meter I ran with them, I tried the Inspire 7 and they felt horrible. They have pronation support so if you pronate then they are good, otherwise you will be carrying extra weight on your feet. All in all, Mizuno make excellent running shoes and as I always say, you have to try them, walk a bit, run on the treadmill and if they feel good, buy them.