Hi Javazcript!
Those are fine machines!
(And that's not Acer X80N, that's Asus. hehe.

)
All of which are Consumer Notebooks (or 'Budget' Notebooks, if you wanna put it that way) except for one, the Dell Vostro A840, which is a Business Notebook.
As a Thinkpad fan, I tend to think that Notebook Companies tend to make better Business Notebooks than Consumer ones. Mas mahal kasi talaga ang Business Notebooks because these companies place the fastest and greatest parts in these machines.
And as such, I'd recommend the Vostro. (but that's just me) At 29k, steal na yan. Plus I think Dell support is getting better here na in the Philippines, since they've just opened their office dito.
Lenovo G410 follows the Dell Vostro closely -- but that's only because Lenovo makes the Legendary Thinkpads and upon touching G410 I felt that it incorporates some of the great Thinkpad features albeit shards of it lang.
After Lenovo, I'd recommend the Asus. Because Asus is good at hardward. Did you know that Apple commissions Asus to make iMac hardware?
There you go.
Pero don't take my word for it ha, ask around parin.
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And no, Dell Vostro, is not a UMPC. It is the farthest from it.
A UMPC or UltraMobile Personal Computer is a category for all notebooks that weigh under 4 lbs. Different pa yan from a Netbook -- which is a low-power, low-cost UMPC.
Thanks for the question javazcript!
I hope you find my answer helpful.
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