Well I think that's probably ruled out an A4, realistically the 3 series, based on size and what I'd get for my money.
Feel like I'm left with Mazda 6, Superb, Mondeo or a Passat.
In terms of room, it just needs to have enough room to get my seat back with a car seat behind. If the car seat fits now, it'll fit for the foreseeable once turned to be forward facing. It doesn't need to huge in the back.
Boot space is important, but not the be all and end all, roof box is always on option for holidays if I really need the space. Something that can get 3/4 decent size suitcases in the boot is enough (and frankly the focus easily fits 3).
I do like something thats decent to drive. The Focus is a 1.8 petrol so nothing special, but handles well and has enough power when required, don't really want to take a backward step if I'm upgrading.
I know the answer is to go and check them out and I will, but good to get peoples opinions.