I'll be interested in this thread too as on the hunt for a tablet and will be using it for similiar things.
What size are you after? The ones that interest me is the new Samsung Galaxy Tab 2 which is about £199 for the 7" version, Sony Tablet S which is slightly bigger at 9.7" I think but costs 100 quid more, or just recently I've seen a refurb ipad2 direct from Apple at £259.
At the moment, i'm more drawn towards the Sony tablet.