Selecting RC controller

I’m looking at doing a couple of projects that would require an RC controller, quadcopter and remote car.

I realize this is somewhat vague on the requirements but at this point really don’t know the exact q’s to ask.

Based on the experience of this forum I would like to get some ideas on a good inexpensive controller that would work for various Arduino projects that would require the controller.

Any ideas?

A used RC hobby transmitter and receiver pair are cheap and will let you give remote input to your device.
Edit: if you go with a receiver that provides CPPM like this
HobbyKing Receiver
You only use a single pin to read all the channels.

Youtube quad build " cheapass quad" ... It will give you the different requirements for car versus quad controllers. Arduino based and good instruction even if you do not want to build yourself. Many other Arduino stuff there also