I use my computer for EVERYTHING.

My perfect computer would have two 100gb 10,000 rpm internal drives, 2 gb RAM, tablet construction with Windows Media Center, DVD burner, WiFi, WiMax (I live in Korea), 15 inch HD screen with built-in Tivo. If you could get that under 7 pounds and less than $4000 I would be first in line.

I travel across the Pacific on a dozen RT a year, usually in First, sometimes in Business. While a 10 hour battary would be nice I just need access to a power connection.

So it comes down to what you need.