Two perspective to look at it.
If you are hosting a booth, you will consider going to ASL Expo because its cheaper. However, same people walk around and around. So you will be faced repeating people.
Deaf nation is expensive but more people show up and many new face all day at your booth.
As attendee of the event, ASL Expo is not free. Cost $5 to get in ASL Expo, and cost $0 to get in Deaf nation. More turn out familiar faces at Deaf nation than Expo. ASL Expo has poor planning and sometime located where parking is not free. It can be a budget buster.
I prefer Deaf nation because it generate more business for our booth and their reputation is far better than ASL Expo. The ASL expo has canceled two expo. One due to blizzard at Ohio and one unexpected canceled at NY. It show unethical and risky for business to host a booth at Expo. We are already considering canceling all ASL expo plans and focus on Deaf Nation as it benefits us.
However, ASL expo in St. Paul MN sound appealing to me as I am local. No Deaf nation plans to come here. But ASL Expo's location in St. Paul requires to pay for parking as its not free. Not good planning ahead where to park the car and where to get the shuttle etc... Poor planning and cost inefficient for community.
Its my 2 cent... don't shoot me down!