What's the state of Google Services on iOS? Good? Bad? Give me your thoughts.

I want to buy a tablet that is in the 10+ inch space. Right now it's a toss up between iPad Air, Tablet Z2, and the hope for a new Nexus 10 at I/O.

Those of you who use Google Services on iOS, are they any good? Nilay has said repeatedly that the iPad/iPhone is the best Google Device. Is that true? What are your experiences?

Xperia-z2-tablet-vs.-ipad-air_medium

via www.product-reviews.net