I wouldn't discount the Mazda, its a really nice car. Personally I'd be heading for a test drive in a Superb or a Mazda 6.
Tbh the Mazda is still top of my list. Looking online people put rear leg room a shade behind the superb, but only just. Boot is smaller but still much bigger than focus. Also sounds like it's much more engaging to drive and I'll likely get as much if not more spec for the money something like this:
http://www.autotrader.co.uk/classif...6/price-from/0/price-to/17000/page/1/usedcars
Or
http://www.autotrader.co.uk/classif...6/price-from/0/price-to/17000/page/1/usedcars
Problem with that version of mazda 6, they only sell as an estate or saloon, so your probably going to want\need the estate.
My father in law has just purchased a new estate, top spec, sport nav or something, it has just about every toy you could want, looks good in and out, 2.0 petrol, never going to set the world on fire, but good economy and more reliable than the diesel engines in them. They facelifted them last year, subtle differences between them.
Yeah those two are face lifts (the have the bigger screen elevated above dash level). I'll take a look at them in the flesh to see how big the saloon is.