Chrispee, I just bought (about two hours ago) some Adidas Adizero's. Really comfy, well-recommended and the shop price-matched them to an online price. I then blew all of that saving and a lot more on 'Your Sole' heat moldable insoles which I'm looking forward to trying and just seem to take up the slack around my arch.
(trainers £56, Insoles £38, ouch!)
My osteo suggested aftermarket insoles ages ago and I've been using them ever since, various brands.
Might be worth looking at orthotic insoles as an alternative to a very supportive shoe?
Wonder if anyone else has any thoughts on this.