I am considering selling my original iPad and getting a new one. My first iPads had AT&T 3G connectivity, but I never used it, and they are heavy as heck. I use the hotspot capability from my iPhone 4 when I want to use an iPad online, but my iPhone isn't 4G. Anyway....if I don't think I'll use the 4G capability, would it be wise to buy the 4G model anyway because of aftermarket value, or do the WiFi models hold their value just as well. TIA for your answers.