Excellent product. The jump in benchmarks (shown on the AnandTech site) is significant, stunning, really, especially coming from an iPad 1-2 (like me

).
From my point of view this is really the iPad "3" (as in version 3) given the form factor and internal architecture changes. The subsequent iPads after iPad 2 were refinements on the standard set by the 2.
As with every major revision and in customary Apple fashion, Apple is saving some things for the next incremental upgrades (Touch ID, more RAM, gold option). They never give you everything you want up front (just like drug dealers, they get you on the comeback).
But unlike the jump from iPad to iPad 2 where the 2 is really the iPad "past prototype" (iPad 1), this is the one to buy. The iPad 2 was, IMHO, the real game changing iPad and the one to get then. That's one of the reasons why they still sell it. This new iPad Air fits that category. I believe they'll be selling this one well past the release of the next generations and will have the longevity of the iPad 2.
I agree that power (?) users may want more power (RAM), but for the target Apple audience in the middle of the bell curve (like me), this is it. I'll even suck up my distaste (OK,
abhorrence) of iOS 7's design language for this tablet; after all I'm in apps more often than not and I can implement a jailbreak (when it becomes available) if I can't take it anymore. Light, powerful (enough for me), beautiful (hardware), and a BANGING ecosystem.
I can finally upgrade my iPad1 and wife's iPad2. Mini for the kids (bad ass as well).
I thought I was ready to walk away to Android...Damn you, Apple. Take my money.