Eh, probably not
I said yesterday here that I was not b/c I didn't feel like it was a big enough upgrade. I am NOT going to sell my iPad 1 anyway as I like to keep it as backup in case anything happens to the next iPad that I buy. Just the way I like to do things.
I played with an iPad 2 the other day and I loved the feel and speed but neither were really THAT different to warrant a few hundred bucks from me.
I will wait for the 3 when I get 2 nice years out of the 1