Thanks D2D
Its a bit tricky - I always used to be a heavy heel striker until back problems forced me to change my style and I am now a fore-midfoot striker.
I ran for many years in Asics DS Trainers and prefer a lightweight trainer as like you am a lighter runner myself, though always ran in mens shoes as have very wide feet and found I could not get on with the narrowness of womens shoes.
In 2009 at the GNR I discovered the lunarglide and loved them - they were the first womens running shoes that fitted me comfortably and catered for my wide feet.
However, the last two pairs I've bought have been the lunarglide +2s and they really make my feet ache.
I could either go for the lunaracers as have heard good reviews on them and hope they would be suitable for marathon training or go for something like the air pegasus or go back to my old Asics - I wouldnt want to try everything else on the market, just the two makes that I know are a good fit for me.
Any other advice very welcome - will be buying in next few days as cannot face my next long run with sore feet.