And I gonna be the first one to say it I think... I remember during PyCodeconf 2 years ago many of the attendees from SF were really impressed by the amount of women here (beautiful ones) that even the most introverted (I am one of those) can find someone here. For girls too, also, since people are really obsessed with fitness here. That's pretty shallow but hey we didn't come out with Tinder ;-) you guys did.
The fun time we have at nightclubs (now there are many hipster bars and venues) is really unmatchable, I went out 3 times this week (it's just friday night) and the places were still going hard at 5am, not only that, there are places that close very late and open early (Will Call, from 12pm to 7am) or open at 3am (Mekka and Space). I might sound like a party guy but I'm not, this is very typical of Miami.
I'm not gonna tell you, you can find smarter people here, since that would be a lie, but artsy people? Probably, and very good looking.
About the affordability, I live in front of Bayfront Park (the biggest park in Downtown, walking distance from AAA) the apartment is beautiful, and the building is like living in a hotel, pool (with a bar and full staff), gym, spa, all that for only $1650 (and my neighbors pay a lot less, I'm just a bad negotiator), check it out: http://www.vizcayne.com/