Its the strength of the two systems that's creating the havoc, GFS is weaker and further south, Euro is stronger and further north, Right now, I would lean GFS, It seems to have more support on a weaker system.
If we had a colder air mass over us that would be a classic right to the coast, Its going to be slop more then likely here but back by you and NW of there looks to be a paste job verbatim.
I just looked at 12z, There was more spread but the left members were inland over Maine as well so they shifted a bit east at 18z tracking into the Bay of Fundy with more members.