I go to Origins every year, but I live less that 45 minutes away, so I can drive there easy..
I used to go the the local con, forget its name, but it was getting really lame and because they kept scheduling it for Mother's Day weekend attendance kept plunging ...
MarCon is a medium SciFi con in C-bus, I went once but there is no gaming and the dealer room catered to goths and ren-faire costumers, not worth parking fees to me
The Central Ohio Comic Con is getting be really big, except that the idiots moved it to one of the big shopping centers in town (Easton) and it is on the first big christmas shopping weekend of the year, Thanksgiving weekend. Idiot con managers ... Once was enough for me.