South Hampshire prices:
After contacting a few places , I have a quote for £185 from
http://www.tyres-r-us.co.uk (Eastleigh).
That's ride in, ride out fitted, 120/60 and 160/60 ZR17.
Alan Lear in Winchester will do the same for £190.
I found the online retailer Bikers World to be a similar price (£17

EXCLUDING fitting.
http://www.bikersworldstore.co.uk/av..._store=default
Unless anyone pings me with anywhere cheaper in South Hants, I'll probably get a pair of these next week from Eastleigh. I'm all about ride in, ride out as I don't have the gear to take wheels off.
My Metzeler Z6s have lasted OK, but the front's squared off in three different strips it seems - a flat strip along the centre, and one each either side, with a clear transition from one flat bit to another. Which doesn't feel great, as you can imagine! My rear has squared off a little less but it is much newer.
I wanted to switch to Avon Storm Ultras following reviews and opinions of you good good people!