To be honest your post is a bit vague for us to help you much - give us more input any we may well be able to give you some suggestions as all your post says is " Im about to buy one of the above, any suggestions? " - its only that i read the title that i realised what you were on about.
depends on what you want out of a pc and what capacity you need, what room you have, what funds you have etc etc
Have you looked at any particular makes. Do you need it to be portable???
