My biggest suggestion is to never top it. That's going to produce growth that will be extremely dangerous in the future. Your solution is to thin the insides of the trees out, significantly. Don't ever let anyone top your trees but rather remove entire limbs. Your case you'll want to have first off any crossing pattern branches heading toward the trunk removed first and then thin entire limbs. That's the only way to go and to preserve a tree as well as its' dignity.

Dax

Hire a certified arborist to correctly reduce the size of your trees. Since shade trees like sugar or red maples do not produce distinct leaders, it is quite possible to reduce the height without causing damage to the tree or problems later on. Generally, this is done along with a thinning of the canopy overall to reduce the total volume, much as Dax describes.

But this is work best left to a professional. They will approach it with the correct timing and methods to ensure the continued health of the trees.