Got two local running shops and one will video you , check your pronation and advise you on the correct trainer for you. They’re really good because of their aftersales ie they will let you take the trainer back for a refund / different trainer if you have problems.
I’m using some Nike Shox at the moment but that doesn’t mean that all Nikes will be comfortable for me. I quite like some of the Asics but would rather buy them from an online shop after trying them out in a running shop [check out Next – offers section].
My Nikes aren’t great after 6miles and my feet get quite uncomfortable and I will more than likely end up with blisters but I’ve just got some Karrimor running socks from Sports Direct and they are helping no end