I did the all grain AHS 20th Anniversay ESB a few weeks back. The beer was fermented with Pacman at 65 degrees (F) for three weeks then brought up to 70 degrees for another week. After a week under 10 pounds of CO2 pressure, it tastes pretty damned good.
I overshot the target OG a lot (1.056 vs. 1.048) and the FG was also lower (1.011 vs. 1.014). I suspect my OG was impacted by far better efficiency (than expected) during the mash and the FG impacted by the yeast strain. I also mashed a bit higher (154) to get a little more body.
The end result is a smooth malty beer with higher than expected ABV.