I’ve been using WebOS on a Pre for the last six months. It’s hands down the most satisfying phone OS I’ve ever used. I couldn’t live without the multitasking at this point, and the gesture interface is very intuitive and easy to use. It’s a little sluggish out of the box, but they’ve made it insanely easy to overclock. I’ve been running it at 1.2ghz without a hiccup for the last month. Tons of homebrew support out there if that’s your thing, check out http://www.precentral.net
As for the Pre hardware- meh, I’ve had better. The screen is nice, but the keyboard is so-so and limited to portrait mode. The slide is cool looking but not well engineered. I’m ditching it the second Sprint gets a new WebOS device.
Touchstone charging is awesome, and another thing I can no longer live without. It’s rock solid in the car, and great for bedside alarm clock use.
Thanks for the info.