Casio definitely thought about the student/teacher relationship when designing the PX-160. It has a duet play mode, which splits the keyboard into two halves. Each half is the same octave range (about three and a half octaves per side), so a teacher can demonstrate on one side while the student plays on the other at the same pitch. Two headphone jacks allow both players to use headphones without the need for a splitter. If the speakers are being used, they can also be configured to output sound from the left keyboard side to the left speaker and vice versa.
The hi-hat cymbals (nicknamed "hats") consist of two cymbals mounted facing each other on a metal pole with folding support legs that keep a hollow support cylinder standing up. Like the bass drum, the hi-hat has a foot pedal. The bottom cymbal is fixed in place. The top cymbal is mounted on a thin pole which is inserted into the hollow cymbal stand cylinder. The thin pole is connected to a foot pedal. When the foot pedal is pressed down, a mechanism causes the thin pole to move down, causing the cymbals to move together. When the foot is lifted off the pedal, the cymbals move apart, due to the pedal's spring-loaded mechanism. The hi-hats can be sounded by striking the cymbals with one or two sticks or just by opening and closing the cymbals with the footpedal, without striking the cymbals. The ability to create rhythms on the hi-hats with the foot alone enables drummers to use both sticks on other drums or cymbals. Different sounds can be created by striking "open hi-hats" (without the pedal depressed, which creates a noisy sound nicknamed "sloppy hats") or a crisp "closed hi-hats" sound (with the pedal pressed down). As well, the high hats can be played with a partially depressed pedal.
We all agreed that the keyboard action felt the most like an acoustic piano. It has what Casio calls “tri-sensor scaled hammer action,” which involves the use of three sensors instead of the usual two. This makes the keyboard more responsive with repeated notes because the key doesn’t need to return to its resting position before being struck again. In our testing, this seemed to allow more musicality than just the on/off trigger switch that most synthesizers use. In the transition into the second half of Liszt’s Hungarian Rhapsody No. 2, for instance, the tri-sensor action will allow you to better control the dynamics of the quickly repeated C-sharp.
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.