Toronto. I make it to at least a game a year.
I've been to Buffalo 3 times, Toronto (Buffalo) once, Cleveland, and one home game vs TEN in 2010 (our only home win of the year).
I get Sunday Ticket so I don't miss any games. The only games that I would get on basic TV (other than primetime) would be vs Bills (barring a blackout) and sometimes vs the Jets, Pats, or another north-east team.
This year, we are looking at going to one "driveable game" (CIN, IND, or BUF), and one other game (SF, AZ, or a home game).