I have to say Im VERY happy with my web browsing. I have a 17 inch HP desktop replacement notebook running 7 and 8 GB of ram sitting next to me on the bed, and I'm using the iPad because it works just as good and loads pages quite quickly, but is more comfortable on my lap.
Matthew, Im really thinking there's a problem with your wifi that's specific to your network or your iPad, because those speeds aren't typical, and your having some real issues with lag that most others don't seem to be having.