A Nexus 7 is still half the screen real estate of a Touchpad. It does Android better, that's for sure (I've used one and been impressed), but it's still a mini tablet vs. a full tablet. $150 for a Touchpad is about what it should be going for in this day and age.
But far be it from me to get in the way of busting somebody's nuts...
Android's really the only OS worth using. I mean ubuntu, ok, but pretty meh.
And WebOS? There's a reason everyone and their grandmas are trying to put other OS's on the touchpads.