For a reasonable budget option I would suggest the Lindy BNX-60. Choice of wired or bluetooth, with noise cancelling. My wife bought me some for Christmas and I've been suitably impressed. OK, the sound quality's not going to be as good as something like a Bose, and the noise cancelling isn't amazing but for £70 they're a pretty nice set of headphones, I use them a lot.
They're over ear but not too big and boxy, I find them comfy enough.
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With bluetooth headphones on a tablet, do make sure you consider latency. A wired option is always useful.
