Am on a shoe replacement mission and realised I might be missing the plot here. Want to get another pair exactly the same as last pair Asics 2110 but no UK websites I have trawled yet have a Ladies size 9. Is this because the 2110 is being discontinued? If so, is it's 'new' version the 2120? How do these model numbers work....? Trying to follow RW shoe surveys but am still feeling baffled.