For as long as they last, they are excellent. Personally, I almost destroyed the upper part (first time it happens to me with running shoes) with wear appearing in the first 200km. In the end, they lasted until 600km. I also had the v1 which lasted longer. Excellent foam for anything faster than a 4.30 pace (tempo/intervals), and very comfortable for long runs. The major drawback, as generally mentioned, is the outsole on slippery terrain. It is also not recommended for people with high arches, as the foot leans too much inward due to the narrow midfoot and can cause issues.

Amazing shoe, especially for a pace of 4:30'/km and faster.. The build quality is very good, as after about 550 km of use it is in excellent condition. My only objection is that when the terrain is wet it requires a little caution, without this meaning that it is dangerous.. Definitely worth the money!

The best thing I have ever worn.
The shoe is awesome.
It "pushes" you to run faster.
In walking or standing situations, they might get tiring.

It says it all by itself, it's the shoe for running. Very good running shoe everywhere. It has very good technologies that when you run, you don't realize that you're wearing something. Very soft and good fit on the foot. Exceptional feeling in the step that helps you a lot in running, whether you're running fast or not.

Excellent shoe! Very lightweight and can be used both as a daily trainer and for races, if the user doesn't want to buy supershoes (with carbon, etc.).

Soft and comfortable.
Used for walking and they have some instability in the heel...
For running they are amazing

I have the first model and after being completely satisfied, I bought the second one as well. Amazing shoe.
It is suitable for both slow and fast runs, although you can feel the push they give you that they are meant for speed. In turns, your foot turns dangerously for fun, so in my opinion, they are mentioned for athletes with some experience who know what they want.

If you don't mind the lift it has on the heel and arch, you will enjoy them. They are for high speeds. Very lightweight and with a good fit. The incline it has, on one hand gives speed, but on the other hand loses stability. Unfortunately, after about 100 km, they caused me injury on the metatarsal area

The endorphin speed is a shoe that in order to understand all the hype surrounding its name, you must do 2 things.
1. Wear it
2. Try to go for a relaxed run with it

You will be surprised to see that even though you want to go slower, the shoe just won't let you. I consider it a given that anyone who wears it will break their personal records. Also, even though I have changed dozens of shoes with this foam technology, I have never seen anything like it. It feels like walking on balloons. Unbelievable. I can't wait to wear it in a 10+ race.

In my opinion, every runner who respects themselves should run with the endorphin speed, even just for the experience. Saucony really nailed it.

Lightweight, fast, comfortable, and soft compared to the Pro 2 that I have as a racing shoe. I would say I am thrilled with the shoe!