From a practical point of view the Galaxy 2.0 petrol is the best. The Renault & Chrysler are lovely vehicles , loaded with toys but quite a liability at the age. I appreciate you are not doing the miles but that is quite often when things start going wrong. The Renault would be ok in France "when" it fails, The Chrysler is hage and loaded but could ba a bit of a chance.

The type of vehicle you require with large family and dogs is really a multi van. These are really popular in Europe where you would have a Ford or VW based van with the front half fitted out in luxury, alloys and met paint & Tint etc and AC and the rear most panel as a van. The Ford transit you can order as a new build to any spec and have seen a few in Europe even with a cosworth engine etc just as an example. Merc Vito/Transit/VW etc

I have driven a few Ford Transit conversions and they drive so well and are so practical they are simply brilliant .

You're looking for 6 occupied seats and considerable boot space for the mutts. An FRV keeps it's full bootspace with 6 up, while a "Full MPV" will lose a large chunk - unless you have chihuahuas I think you'll struggle with Galaxy,etc.

Grand Voyager I don't know the bootspace, but unless you're looking to splash upwards of 30 grand, I'd consider the Hyundai i800 - http://www.hyundai-car.co.uk/newCars/i800/

Van based, but re-jigged suspension for passenger driving. 8 seat capacity (2-3-3) with a big boot even if fully loaded, good engine, appears reliable, under 20 grand new http://tinyurl.com/hyundai-i800 for 'best deal' via HJ.

Problems? No curtain airbags iirc, and if you want an autobox it's a special order and a higher tax-bracket (manual gets in under 225g/km CO2).

As a happy FRV owner myself, I'd not switch to a 'full MPV' without thoroughly testing it's capacity - some have fold down but not fold-away seats compromising bootspace (think the Chrysler ones fold into the floor though).