Has anyone with both wifi and 3G/wifi iPads done a wifi speed and reception comparison? I'm curious. I already have a 64G wifi that I've been using since the original launch and I also pre-ordered a 32G 3G that I'm unsure if I'll be keeping (yes, it's actually still in the box). Knowing me I'll probably end up taking the 32G 3G to the Apple Store and exchange it for a 64G 3G anyway. Thought this would generate some interesting dialogue though.