Based on my experience Citroen are sh**e. I even wrote to James Wyse MD of Citroen to tell him as much. I have put the offspring of Citroen employees through college. I had a sticker on mine staying "Everythin about this car says quality". Spent 3/4 weeks a year in garages.
Mondeo, fine car to drive, parts are cheap. Would be a bit concerned about depreciation though. How about the Focus C-Max?