Personally I wouldn't recommend Android tablets.
They're nothing but an oversized phone.

In general, I found their UI not very good. The Apps pretty poor (overblown) and just not much of a laptop replacement as I'd like.

The PlayBook is phenomenal but its on outdated hardware, and lacks ecosystem. Great potential without a future.

The only thing that makes sense is the iPad. The 32GB WiFi rMini. The iPad 4 and Air are pretty good too.

I would only recommend Android tablets as cheaper alternatives, providing they're decent quality and have a community to boot. A secondhand Transformer or Nexus are okay, I guess.

Otherwise, keep your money and use it to upgrade your smartphone.

My $0.02