I've used my father-in-law's a little, just to try it out. It's okay for novels, but I could tell in the first 10 minutes that I'd never want to use it for anything technical.

To be fair, he has an older one (with ads! :angry:) and he opted for the model without the touch screen. The newer ones might be nicer, but I wouldn't ever read technical books on my phone either. The 5" screen isn't enough real estate. Talk about not being able to see the big picture...

Just my two cents.