All of them? I had an ancestor or two who lived in and around Hoxton but generally they were spread around a bit more. Though I have read accounts of people who literally never left Hoxton all their lives.
As for happily, I don't know how you can be sure of that tbh. Centuries is a long time to be happy in places that were somewhat troubled from time to time, as a glance at the Charles Booth map will reveal. Especially the Old Nichol.
Phuck Soho House, mate. That group has overstretched itself imo with ridiculous growth and insane debts. You wanna be joining this place: http://www.thehospitalclub.com/
Club in Covent Garden and opening in LA next year. Also, if you're in film then you'll want to consider Soho. If the lure of the hipster East is too strong then consider Spitalfields. Bethnal Green proper is a bit too far east tbh. It's trendifying but you wouldn't be very central. But as I said, there's a lot of film industry in Soho.
Good tip man! I met with a post house in Soho, Goldcrest Studios. Sweet locale and some very hot chicks. In general there were hot chicks on every street, but not trying too hard to be hot. Structurally hot, if you know what I mean. Seemed like it would cost a bit actually to live there; but hey, strong dollar and all that.