In reply to BattyMilk:
Used Speedcross 4 from launch and went through a couple of pairs. The soles always wore fine but they would split on the forefoot. Same with the Sense Ride's I wore for dry and on/off road runs.
Moved onto the 5 and they crucified my Achilles. I sold them after two runs. Not prepared to mess around and not enjoy my running.
I planned on switching to Saucony for the road, Hoka Challenger ATR for dry trails and Hoka Speedgoat for mud.
The spring was so dry I used my Saucony Triumph for every run. Just retired them after 1200km since the end of March with at least 50% of that off road.
Now switched to the Hoka Challenger ATR for on/off road. They are comfortable but I am already concerned about durability. The sole only uses hard rubber on the heel and forefoot. The middle is soft and squishy which means that rocks, gravel, tree roots etc scuff and rip it up. I expect to get no more than 400-500km out of them.
The Speedgoat has only done 200k but always in lousy conditions and they have been great.
Given the performance of the Saucony's I have just purchased a pair of Hurricanes for long and recovery road runs. They feel very plush and beautifully made.
When the Challengers give up I will have a look to see what suits from Saucony.