I wouldn't.. The laptop AMD cpu's are really very slow when you're paying $1000+, they could barely compete with Intels last generation of mobile cpus and are utterly blown away by any core 2 duo. You do realize that the tx1000 is a tablet right? That's why it costs so much and I doubt you need a tablet. Tablets also have worse screens then regular laptops.
If you want to keep this latop for awhile I really do not recommend getting an amd unless you really want to save money.
If you want something more portable then the dells inspirons etc., you could look at dell xps m1330, the base model is $1300 without the education discount but that is a little pricey (you do get a very nice laptop bag free though and the laptop looks **** nice).. also they are having problems shipping all their orders out.
A 14" lenovo t61 can be had pretty cheap with modest specs and they're VERY durable, pretty lightweight, thin, and very powerful even modestly specced. A 3-4 year warranty is also pretty cheap ($100-$130).
HP 6510 can be had $1100 with 3yr warranty and they are nice and pretty light (5lb)
HP Compaq 6510b Notebook PC Small & Medium Business