Ok so I went along to the running shop determined to get brooks pure grit. After trying bonus a few pairs we decided the grits were not for me. I felt really good and looked good feet wise in the adidas adizero xt4.. Took them out tonight for 6mikes and they were excellent. Since I have sat down my calves are feeling a wee bit tender, but I'm happy to bear with that.. No pain on the run and the shoes felt excellent, responsive, great grip in muddy wet conditions and nice and light.
As it had a brooks voucher for 25quid off I also bought some pure cadence which have a support over the foot and stiffness similar to the mirage on the arches, same drop and similar weight to the mirage... Feel lovely and soft but they held well, am expecting big things of these shoes as I aim toward my first marathon.