I don't know what end of Jersey you are on, but I've driven up to Edison from Hammonton (Atlantic County) many times. Yes, there are a lot of toys, but they don't bother me, and there are still plenty of train vendors to keep me busy.
Allentown is bit further away for me, but as mentioned, it is a better show. I'll be heading for Allentown this week, so I'll probably skip Edison this time.
FYI - If you live toward the southern end of Jersey, there is now a Greenberg show in Wilmington, De. as well. I haven't been there yet, but I may try to check it out next month.