Android Police, one of the two best Android-related news websites (together with AndroidCentral) put together a holiday gift guide. Which tablet do they recommend?
iPad Air 2 ($499-expensive). Yes, I am breaking the gift guide by putting this here. Why? Because as you'll notice, none of us recommended the Nexus 9 (edit: Cameron recommended it, but don't listen to him), because it's not exactly great. In fact, I'd argue no Android tablet is. The Shield Tablet is a lot of bang for your buck, but the screen kind of sucks and the battery life isn't spectacular (standby is bad in particular) and it's heavy, thick, and kinda ugly.
The Air 2 is reliable, predictable, and very fast. iOS still has some tablet experience apps lacking Android equivalents, too, and while Android tablets do have some advantages (like a better Gmail app BY FAR), the iPad remains a no-brainer for me. If it's my money being spent on a tablet, I'm going to buy the one I know is going to live up to a standard of quality - the iPad has been the gold standard in tablets since it was unveiled, and that hasn't changed. I don't see it changing any time soon, either.
And he's totally right, of course. Assuming you don't yet have a preference for Android and you're out looking for the best tablet, the iPad is the only real option. Better applications, better experience, better build quality, better performance, better battery life - the list is endless. Google's still got so much work to do on tablets.
There are decent Android tablets, but there are no great ones.