Eugene, that's really sad! On my HTC HD2 I can comfortably read any documents/images/video/audio in native formats without conversion. The browsers are Opera and IE - never had compatibility issues except with heavy flash interfaces. My 16Gb memory card in it is 50% full of useful free software. And I'm downloading it either directly or through my DropBox online account. It's WM 6.5.
According to my KillAWatt meter, I cut almost 80% on using my home computer in the past 3 month because my Win Mobile phone is so versatile.
Netbooks are very good, but you'll get 6 hours max battery time, a lot of it will be wasted on powerup/powerdown/application loading time, and it's not easy to recharge it fast in the field.