Alan Gerber wrote:

Not that there's any reason to prefer ISP, but avoiding it just because
it's inside class C airspace seems excessive.

I find Charlie airports extremely easy to fly in and out of, aside from
fees, as I'm typically vectored right to a base or final leg. Most of
the time, they even control my descent to pattern altitude.

Have a taxi diagram ready with the parking area marked, and the sheet
rotated to orient with the runway you arrive on. Sometimes, the hardest
part of a big airport in a spam can is taxiing.