Looking for recommendations for a keyboard/digital piano, ideally one able to be connected to Garage Band etc on the Mac or iPad.
The keyboard to be shared by three children between ages of 12 and 6. Two of them have some formal musical training, can read some music, play horn instruments and have some very basic exposure to playing simple tunes from sheet music on an upright piano. The third is a complete newbie.
Dont necessarily need a keyboard stand at this point but ideally would like to add a stand and piano stool later on.
On the affordable side, I'd definitely take a look at the Casio PX-160, Yamaha P-45, and Roland FP-10.
If you're willing to invest a little bit more money, consider the Kawai ES110, Roland FP-30, and Yamaha P-125. All of these instruments would be a good choice not only for beginner but also for more experienced musicians.
Here're some good articles on this: