Hallo there!
The choice of best dictionary is a rather subjective one. I think the first criterion is your dialect. Most dictionaries serve a specific dialect of English: it might have entries and spellings from other dialects, but will treat one as standard and the others as variants.
Size may be an issue. The Oxford English Dictionary is thorough, but how many pages on ‘and’ do you really want read? Chambers dictionaries are rather conservative, and is full of obscure, archaic words, but quite sniffy about changing usage. Other dictionaries are a bit more practical. Some have pronunciation guides (American ones make up their own ‘house’ squiggles, while Brits tend to use IPA standard); some have etymologies, so you can see where a word comes from (this is a must for me, but then I’m me!). More recent dictionaries have been leaning towards being encyclopedias: pictures, articles, jokes and such. One thing that can be handy in a dictionary is to have ‘grammar guides’ to help you out: a note under ‘affect’ that tells you how it differs from ‘effect’ for instance.
So, it depends what you’re looking for…
- Garzo’s back.