In reply to mmmhumous:
Thanks for all the advice so far (including the emails). Very much appreciated.
I've tried on the Boreal Joker and Five Ten Anasazi Velcro at my local shop and climbed a range of routes in both my shoes, and my partner's (Scarpa Vantage), so I'm starting to get more of an idea of what I'm after:
The Jokers were pretty comfortable and the Anasazi were right at the limit of comfort I'm willing to sacrifice for performance (their shape forced my toes to curl slightly).
Climbing a few routes in my partner's shoes was eye-opening though! I hadn't realied just how thin and flexible the soles on my shoes are, there was a lot less feeling through the Vantage's soles (less precise, but also less painful on spikey holds), but also their stiffer mid-sole provided far more arch support than mine do.
So I 'm after a non-aggressive shape, with 'relatively' thin soles and good arch support/stiff mid-sole.
Any suggestions? Do these shoes exist, or do I need a hacksaw and some no-more-nails? I'm off to a few more shops tomorrow.... hmmm B&Q or North Face?
Cheers