Like the Casio, the Yamaha has a duet mode that allows two people to play in the same register at the same time. However, the P-45 has only one headphone output, so you’ll need a splitter for both players to use headphones while playing together. The headphone jack is located on the back panel of the keyboard, making access a bit more difficult than with the Casio’s front-mounted jacks. The console controls are minimal, and while Jack liked the simplicity, Brent and I found them unintuitive.
Maybe you've already got a specific brand in mind and want to see all the digital pianos they offer. All you have to do is click on the brand on the left hand side of the screen and within a few moments you'll have access to everything that's available. For that matter, you can always play is safe and stick to the top-rated items…and there are plenty of those in this selection.