I actually think the DLC missions were longer, harder and plenty of fun; they were also quite different in style.
Maybe the free to PS3 was more in the nature of a sample test - so I'm sure everyone else will get the chance too. There is the complete bundle DLC for all of the different regional pre-order packs, so the High Tides should be up there for everyone else at some point.
I really liked the early part of jailbreak - tough with just a pistol and two players - luckily more joined shortly after that.