You probably remember that I changed over to a big Vauxhall diesel estate some time ago. It is complex, but the only thing that really bothers me is the DPF. However, the diagnostic tool allows me to monitor soot levels, regens, etc.
Otherwise, it's great. It does a bit more mpg than the Jazz, almost double the mpg of my old petrol Ford Galaxy, tax is £30 a year, 160bhp so goes like the clappers, and is supremely comfortable on long journeys when it returns 62-63mpg according to the fibometer. I reckon that the car will nearly pay for itself in two years in fuel and tax savings alone, and I've had it 16 months already.
Isn't worrying about the DPF a bit of overthinking/scaremongering? Don't you just need to do an 'Italian tune up'* every now and then to burn off the build ups?
You need a sustained (30 minutes or so) high speed motorway type run every 2-4 weeks to allow the DPF to regenerate, but it all depends upon driving style, numbers of short journeys, types of roads, etc.. If all your mileage is around town, you don't really want anything with a DPF.
One of the problems is that all this normally happens invisibly, and you don't really want to be getting to the point of the DPF warning light on a regular basis, that's the path to a blocked DPF.