I ‘ve had my Sharp Electronic Dictionary for a couple of years and I use it a lot. It’s much handier than a printed dictionary, thesaurus or dictionary of quotations, which it replaces with a PDA-like device with an LCD screen. The electronic books come from the Oxford University Press which means that the contents are pukka - they have provenance and scholarly authority. My only regret is that it doesn’t contain the full Oxford English Dictionary but you can get that by online subscription to the OUP for £200 a year. I typically use it when I want to see the full definition of a word or want to check US vs. British spelling.