Both Boston and Terrificon always seem to be close to each other, yet they both thrive. I think there are enough fans in the area to support both shows. As long as the entry is reasonable, you can go to both just to enjoy the atmosphere. I used to go to both, and enjoyed Boston as they always had top guests, but the last couple of years I have only attended Terrificon. This year they move to the new Mohegan expo center. More room, but no real bump in cost to the fan. I know the owner and he works hard to put on the show. I don't think there will be big dip in attendance for either show, but who spends what where, is another matter.