I've now had my GN2 for one week, after being on webOS since the launch date of the Palm Pre (6/6/09 -- yes, I stood in line that day). I later moved up to a "FrankenPre2," an AT&T Pre 2 with my Pre's Sprint comm board transplanted inside. I had high hopes for webOS, and it really is/was a great operating system, but the webOS ecosystem is dying out, even if some people are still working on the open source version of the O.S.
I'm getting used to Android, and there's a lot to like about it. It's got some features that are new and cool to me, and some of the apps are amazing. There are things about webOS that I miss, but I have a feeling more of those will be coming to Android over time, I'm hoping for a free wifi tether capability down the road, and it would be nice if Android multitasking someday moved to the type of card view that webOS has.
But the GN2 is awesome! A year or two ago I thought a 4" screen might be nice, but probably nothing bigger. Now I love the 5.5" screen on the GN2! It's a bit like skis, I think, which have been getting fatter and fatter over recent years. With each increase in width, people say that they are too big, too fat, but then folks ski on 'em and love how they perform.
I don't get all the reviews that suggest using a bluetooth headset so that you don't feel embarrassed about holding the GN2 up to your head (I use a headset in the car) . Hey, the GN2 is big, it's bad, and it's just an amazing device - I have no problem letting people see me use it (and ask, "What the #*%@ is that?!!??").
All things considered, this is a vastly superior experience to what I've had, and I am ecstatically happy to have made the move to a GN2.