Looking for thoughts/opinions on this... Would you sell an original iPad Air with cellular on eBay and upgrade to a wifi-only Air 2 for the same price? The sacrifice would be having to use tethering when away from home, and no GPS. The benefit would be better speed, likely an extra gig of RAM, better display, and TouchID. I would also save $10/mo by not having my Air on my AT&T Moble Share plan. The cost of the upgrade would only be taxes and eBay fees. That's pretty tempting. I own an iPad Air, 64 GB, Space Grey, Cellular. It's in pristine condition. These are currently selling for nearly $600 on eBay. Apple is continuing to sell the Air 1 at $100 off, but not the 64GB model, which is helping with the value. I wasn't planning on upgrading to the Air 2. I don't really NEED to. But for what I do with it, I would definitely benefit from the extra CPU horsepower and the extra RAM (not confirmed, but there was a teardown of a leaked unit recently and it showed 2 GB). I have some experience using tethering on my daughters wifi iPad. It's not perfect - takes a little fiddling to get it to connect sometimes. I understand iOS8.1 will help with this. I will test this before I make any decision. I also know that the iPhone gets warm and sucks battery when in hotspot mode. But most of my tethering is near a power source. Still, it's a tough call.