I've got a 10" Toshiba and it's OK. Certainly much better than my daughter's old 8.9" Acer One. But, to be honest, I don't really use the netbook that much. It's OK when I'm travelling but I find it nowhere near as good as either a laptop or desktop for general use at home.
I don't think that there's really that much to choose between netbooks. Most 10" screen netbooks look very similar and have the same processor and size of hard drives in them. The only choice you seem to get is the colour of the case and whether you want to pay more for a "premium" brand like Sony.
As for getting them, surprisingly Amazon and Tesco are often cheaper than the more traditional online PC sellers like ebuyer and dabs.
You might like to look here
http://www.novatech.co.uk/novatech/e...&s=NNB-826&v=1
I've not tried one of these but Novatech make good laptops and generally have a good reputation. And this one is only £240 with Windows 7 installed. Most of the other sellers are still shipping with XP and 7 is reckoned to be the future of netbooks.