There are many good quality DAB double din radios available, personal choice and price range comes into play there.
For fitting to your car you'd need a fascia adaptor (something like this)-
You would also need the correct loom adaptor kit specific to whichever radio you choose and a steering remote interface so that all control options are still available.
All this is to just fit the radio and get it functional.
You then need to fit the kit to make the DAB system function, see my guide here for required parts and fitting instructions-
Fitting a DAB radio to a MK2.5 Focus.pdf 660.67KB
These parts are currently available on ebay and are cheaper than from Ford and all in one package together (other than any other fakra adaptors needed depending on radio connections of any unit you may source)-
If you were to move away from a touchscreen unit and fit an OEM Ford unit you would save money on the loom adaptor, fascia adaptor and remote interface, ultimately the choice is all yours.