I like my hubs to be a minimum of 450 words as recommended by several other people (hubbers) here. Google likes hubs to be longer -- the longer the better I'm told.
My hubs tend to be a thousand words or more. I attribute that to my English writing classes at the university where my classmates and I were expected to write 8-page essays on poems of a single line! Yes, I was taught to be prolific in my writing. While there may be some advantage in that, I really admire people who can say more with less. People who can be concise and say all that needs saying with just a few words.