My judgement is based on following grounds:

Citroën C3 Picasso
It’s the most modern of its class and it shows. It shines for the flexibility of its roomy cabin, a better fit than competitors and, most of all, price. A vehicle easy to drive, in spite of being tall. No breakthrough in engines –a bit noisy- and technology. Basic versions short in performance with full accomodation in.

Mercedes-Benz E-class
Excellent evolution of a model already at a very high level. But it doesn’t better the predecessor in some aspects, for example in ride. Very good effort of Mercedes in the fuel efficiency of engines. The price, again, a major drawback.

Opel/Vauxhall Astra
Certainly a big leap in quality, with elements taken from the Insignia. A better equipment also in the plus side. In spite of being much bigger than its predecessor, the new Astra is not wide enough inside in the rear. Also prices rather high and unconvincing engines.

Peugeot 3008
Good fit and interior space seemingly justify higher prices, so the 3008 is more competitive than its rivals in this matter. Pleasing and agile to drive, in spite of the body height. It may also offer a lot of interesting equipment.

Skoda Yeti
One of the best alternatives if you want to combine on and off-road driving. It even wins over most of difficult spots in the rough. No new solutions in power line. Style, a bit reminiscent of Roomster, lacks some refinement.

Toyota iQ
No doubt it brings more new things than anyone else in every aspect. To make space for three persons plus some bags in such an small length is an achievement in design and technology . Fun to drive and a suitable choice for the city. In the minus side, a high  price and an objectionable cabin style.

Volkswagen Polo
The best Polo in its history, by far. Build and perceived quality are best in class. The cabin is well equipped for family use, as well as roomy and cozy. Excellent design for the 3/5-door bodies. Price is justified in most of the versions, though some of them are a bit weak in performance.