Well, after a few weeks with the Asics 2160 trainers they were still creating sore spots and blisters on any run over 6 miles so today I went back to Sweatshop in Brighton to change them.
I have to say I am very impressed with Sweatshop, their staff are very friendly and helpful and spent some time trying to work out why these trainers had been causing me problems before recommending a replacement pair. I took the replacements for a run on the treadmill to make sure they corrected my pronation and double checked for fit etc… these are a bit wider than the Ascis and I really do hope that these cure the blisters.
So, I now have a pair of Brooks Adrenaline GTS 11 trainers. I will be going out later today to start breaking them in.