throw in spot, should you go baseline?

[blewthat]

always wondering what the default rule should be when a foul or violation occurs in the grey area, on the border where it could be taken out of bounds on the side or on the baseline. The spot just inside the three point line on the sides or just outside the paint but not in the free-throw half-circle;

what should be a refs default rule when it could go either way, sideline or baseline?