Upgrade PC or buy a Laptop?

Thought I'd ask 4chan for an opinion.

I'm currently running the following:

Athlon XP 3000+ Barton @ 2.17ghz
Geforce 6600GT 128MB
OCZ Premier 1024MB (512x2) DDR400
ASUS A7N8X-E Deluxe

I'm wondering if you think I would be better off spending $800 CAD on upgrading or spending the money on a cheap laptop instead? I travel around a bit so a laptop would be kinda useful to me but my system IS starting to show its age. What does 4chan think?

Laptop. Your current system specs can still last you another 2-3 years.