Endorphin Speed 5 or Pro 5

I am able to get the endorphin speed 5 or the endorphin pro 5 at a good discount and was looking for people’s experience with each shoe. I have run in the speed 2 & 4 and enjoyed them both. I’m looking to use the shoes for intervals, uptempo long runs, and possibly as a back up Half Marathon/Marathon race shoe. Thank you all in advance.