Phil I went for a 10 which is the same as my adios and they probably are a touch shorter. Width wise seems similar which means for me they fit better than the adios. I always had to go up to a 10 because Adidas were so narrow but at the expense of my toes not going quite to the end of the toe box. with this Boston boost I now seem to have the perfect shoe! It's only taken 8 years to find it!
Funny you should mention the Boston boosts Phil. I've just acquired a pair and been for my first run in them just this lunchtime. Absolutely loved them. They will be my marathon shoe as much more suited to heel strikers like myself than the adios. I like the adios but do find the upper quite hard and they don't have as much bounce as the Bostons. Will probably use the adios for halfs though.
lots of good training going on here. I'll be at London this year so hopefully bump into a few of you.