Comments: I was a little skeptical of PI's new take on running shoes, but now pleasantly surprised. The ride of the M3 is simply smooth. No matter where you land, (heel, midfoot, forefoot) your foot just effortlessly rolls forward. The seamless upper breathes well and accommodates my foot nicely. Many reviewers mentioned that the cushioning is a bit too firm, especially in the forefoot. I believe softening up the forefoot slightly would help the shoes runabilility over longer distances. The other weakness of the M3 is the very shallow and slightly wide heel cup. For those want to use orthotics or have a narrow heel, you'll find yourself slipping out of back end.
From: Nick, Philadelphia. PA, USA
Comments: This shoe rides a little too firm for my taste. It does have a fair bit of foam underfoot, but it seems a little redundant due to the stiffness. The toe box is also a bit narrow. As light as it is, I wish it was a bit softer. The tread holds up alright but the bare foam doesn't, especially if you are running a mix of road and trail. Overall I would not get this shoe again. I was somewhat disappointed with its durability and fit.
From: Garret, Bakersfield, California, USA
Comments: I have two pairs with 500 miles between them. I have been running in the Nike Structure and Brooks Ravenna series'. They are super light. They are the most comfortable shoes I have worn by far, no bulk at all. They are more firm than I was hoping, but they are the M3's for mild stability. Maybe the N1 and N2 are less firm for more a natural feel?? The weight and comfort outweigh the firmness for me so I really enjoy running in the M3's.
From: Mike, Plainfield, IL, USA
Comments: Got caught up in the "variable heel differential" hype and ended up disappointed by this product. The sole is very stiff and firm. Couple the sole stiffness with a loose heel cup and it's difficult to keep your heel secure. Forefoot is narrow and leaves very little room for toes to spread. Arch structure stiff and agitates flat feet. I'd have a lot of difficulty recommending the PI EM M3 over alternatives such as the Asics DS Trainer/Racer or Mizuno Wave Inspire.
From: Sam, North Carolina
Comments: First time in a PI shoe. Very smooth ride with subtle stability. Very comfortable shoes with good cushioning and a nice fit, will definitely consider other ones in the future.
From: Mr. B, Burnaby, BC, Canada