Hi Ken, that is really helpful...thank you...from what you have said I think it would make more sense for me to look at the Lenovo as overall, the package seems more value for money. I doubt we would need more than the starter version of Office as we only really use Word and Excel for letters and basic spreadsheets. I was looking at cheaper pc's on ebuyer this evening, some with more RAM, varying between 4 and 8GB, but with dual core processors. These Zoostorm pc's were priced in the region of £190-£220 however they come without Windows 7 and Office. So if you add the price of the software packages you are actually not that far off (if my maths are correct) from the price of the i5 Lenovo and Acer that you have commented upon. So I think, I am slowly convincing myself that the two pc's, especially the Lenovo, are good value...(in my very inexperienced opinion!) The only thing that confuses me a little is the fact that the cheaper Zoostorm seems to have a higher clock speed (3.2GHz) achieved with what I understand, is a lesser processor? I am not sure how that works!
http://www.ebuyer.com/251310-zoostorm-desktop-7873-1036
http://www.ebuyer.com/283002-extra-value-desktop-pc-7873-1047