Def Con and Black Hat, while both security conferences held together in Las Vegas, are two very different beasts. One attracts the corporate security type, another the hacker underbelly.

Black Hat could almost be described as mellow in comparison to Def Con, one of the largest running hacker conferences in the world, often attracting up to 12,000 attendees. The con is held at the Rio in Las Vegas, compared to Black Hat, which is held at Caesar’s Palace on the strip.

The two conferences attract chief security officers, hackers, Feds, and press alike. Because of the that, the talks vary too, from those like former FBI executive assistant director Shawn Henry who spoke about finding and getting rid of “the adversary” to hacking planes in mid-air. Indeed, there is a nice mix of preaching to the choir coupled with vulnerabilities and exploits that may or may not have been found illegally.

But both conferences are important to a community of CSOs and hackers that generally are pretty segregated. Black Hat celebrated its 15th year running last week, and Def Con celebrated its 20th.

Check out our gallery below comparing tell which one you’d rather go to next year.