Over the past two weekends, I've been to GenCon in Indianapolis and Wizard Con in Rosemont.
Hands down, GenCon was more fun. Wizard Con had awesome celebs, and I may have flipped my shat over seeing Gareth David-Lloyd (Ianto from Torchwood) but it was way too crowded and not laid out in any way that made sense. I spent more time in heaps of crowds trying to get somewhere than I did actually doing anything.
Plus, at GenCon, I got to go with Ashlee and Susan, in costumes. Yeah. It was awesome.