Are you thinking handbuilts route, Ol? I had some Archetypes knocked up last year and they've been ace - put 25s on them but the wide rim makes them feel even bigger, comfy as! I'd bet you could get a set with 105 hubs or similar for around £300ish.
Pacenti SL23 seem like a nice alternative too, similarly wide, although I can't vouch personally.
I've had landmine-proof Open Pros too, which you could probably get on some decent hubs within budget. Excellights too.
That's if you can be arsed with the faff of sorting them, of course.