My judgement is based on following grounds:

Citroën C5
Technically it is one of the most, if not the most sophisticated car of its class, as with its predecessor. But now the advantages are proven not only theoretically but in practice as well. It has two kinds of suspension: steel or hydro-pneumatic. The exclusively fine hydro-pneumatic suspension supports the stability of the car almost independently from the loading as a key element of safety and comfort. Good motor range and quality through and through.

VW Golf
An exceptionally high rank in its class. The perceived solid quality has teamed with a robust structure and a very stale, unimaginative form. Very true, stable, comfortable, vibration and noise free road holding. Fine and advanced engine scale, with relatively small capacity and high power, low consumption, environmentally sophisticated engines.

Ford Fiesta
The Fiesta was one of the creators of the modern era of the small car class. Very good external and internal quality level, convincing materials in the passenger department. Relatively big and comfortable interior. Well isolated, noise and vibration free chassis and body, good riding comfort. Wide and economical engine choice, good value for the cost.

Opel Insignia
Spacey and quality body merged with an advanced technical content. High quality level. Automatic/manually adjustable elevated comfort and road holding, to the need or demand of the driver through the Flex-Ride system. Skilled safety equipment e.g. Opel Eye (the traffic sign recognition system) adaptive lighting.

Alfa MiTo
It is a texbook example of how to build an aggressively sporty, very well balanced car on the platform and suspension components of a regular car (Fiat Grande Punto), paired with for example, an amazingly good smaller but powerful 1.4 l turbo engine. Excellent drivability, very good roadholding and cornering characteristics, good handling (clutch, gearbox, steering, brakes).

Skoda Superb
With its driving experience, quality, and space a real revelation, and the versatile sedan/hatchback body is a practical and exceptional solution with the carefully designed interior. Good engine choice, with several state of the art engines. Good value for money.

Renault Mégane
Same bones under a new skin. Good driving impressions, some very good engine choices. It is still only a hope, that the weak points of the Renault, i.e. the quality, reliability and after sale service have improved.