Being local in mid Michigan I have been to all three airports, and they
are just airports...

PTK is the busiest with a mix of bug smashers and jets, heavy student
training, etc... It is one of the busiest Gen Av airports in the
country and would be a good experience to do, at least once...
YIP is busy but not in the same league with PTK...
Y47 is least busy...

Which is closer and more convenient for your family to drive to - pick
that one...
uuhhh, off the top of my head I think that Y47 is the closest to South
Lyons, like 7-8 miles or so, isn't it? Go to AIRNAV.COM and take a
look - I'm outta here...

cheers ... denny