Not sure what's the best buy my gf got me a Bush FP019 which has every attachment you'd ever need, pretty big bowl plus a blender which attaches to the other side on top. It came with a free mini chopper/blender too. I love it! I think the main thing is to make sure it has all the attachments you'll need and has a good amount of power. Stainless too. If money was no object I'd probably get a Moulinex or Kenwood though cos I'm a bit of a brand name snob!!
Mine's a Kenwood FP520 and it cost about �50 2 years ago. It can chop, grate, mix, beat, slice, shred and rasp veg etc plus it's got a whisk, a citrus press and a separate liquidiser. It has variable speeds and a pulse facility, with a large capacity bowl.
If you're only going to use to make soups do you need a processor or would just a liquidiser be ok for your needs ?
i find this*gadget for pureeing soups and making baby foods very useful. iv'e had it for about 8 years and it still works perfect (knock on wood). there are more powerful ones on the market. if you can afford it maybe you can get a 500 or 600 watts. i even use it for whipping potatoes. cheers
Am not quite sure why you need a food processor for making soup as most of the vegetables are just as quickly prepared by chopping by hand (and with less equipment to clean afterwards). However, If you need something basically just for purreeing soup, can I recommend getting one of these hand held stick-like pulsing "whizzers". I have a Phillips "Essence". It cost about �20 and brilliantly reduces any mixture to a purree within seconds. You just dunk it into the soup liquid in the saucepan and switch on. It's also wonderfully easy to clean as the little whizzing blades are on the end of a stalk which just drops out of the handle for easy cleaning.
Thanks everyone - yes I think I do just need a hand blender and was attempting to just fill up my kitchen with another impressive gadget. Just deciding which one to get from Amazon!