I've had my iPad since September and have the 3G 16gb model. Use the web on it a lot and have nearly filled the thing up mostly with apps.
I wasn't going to bother upgrading to the iPad 2 but after getting a hands on today I like the feel of the new design and it does feel a good bit lighter. I will probably sell my current one and switch to the 32gb 3G model in white as I really like the look of it.
I hate Apple as they always tempt me with their shiny devices