If you travel a lot, the embedded SIM on the unlocked 9.7 Pro is reason enough to upgrade from the Air 2 if you travel internationally. I bought my Pro in Singapore. On my recent trip to the US, several options showed up under Cellular Data Plan. One was T-Mobile, with a special deal for 5gb for 150 days for only $10. It's a pretty amazing deal I could not help but take it. On top of that, the plan also includes 200mb per month for life. In Japan, there is also a plan for au - yen 1500 for 1gb for 30 days. I can't wait to see options in other countries.