Advise on towing Ford Focus or Fiesta?

Narrowed my search to purchase a Ford Focus or Fiesta to tow behind my Fleetwood 28MS rv. They are very similar but in general are they reliable cars? Well built? Plan to tow with 4 wheels on the ground with automatic transmission. Anyone have any problems they can share? Do they drive nicely? Engine strength ok to drive uphill? Any negative points on the vehicle? Any advise would be appreciated.