Hi,
I tried the £175.00 Acer Aspire One in Tesco recently and was impressed - it is a bigger machine though.
I see that Maplin claim their CNM Minibook was originally £219.99 - it would have been daylight robbery at that price and I've only ever seen it on general sale from them at a maximum of £169.99.
We've also got a couple of Eee Pc 4G computers in the family - my one runs XP instead of the original Linux OS (due to the fact that I need to run some Windows apps for my job) and my wife has one running the original Linux OS (bought for her because she couldn't get on with the Minibook (mainly due to the web browsing and video playback issues)).
They are a little bit bigger and heavier than the Minibook, but seeing they cost less than £150.00, they do offer a lot more - even with the original Linux OS, you get Skype, Firefox and Openoffice (and it plays all the Java and Flash content perfectly). It also has a webcam, external monitor connection and easy memory upgrade option. I've also seen a Ubuntu distribution for the Eee PC.
I'm not sure what the current Eee Pc product line up is, but it's well worth a look.
Having said that, the CNM boots up quickly, is very easy to use and has a much better battery life than the Eee PC, and tends to be the one I grab as I go out of the door in the morning.
Hope this helps.