If you are looking at the Genesys and the PA1X, the PA1X has better and more effects than the Genesys. The PA1X pro, (76 keys and no speakers) has a larger hard drive than the Genesys or the Genesys pro. I know sounds are subjective but the PA1x to me has much better sounds. Also, the PA1x has USB and a better mic input.

The polyphony is 62 on the PA1x but like with the Genesys it really depends on what and how you sequence. I have not noticed any note drop-outs on the Genesys pro even in some of my more complex and involved arrangements.

The Genesys has every thing onboard. Unlike, the PA1x the CD drive/burner comes with it installed. The Genesys is by far a much more intuitive and easy key board to use. You get the most for your money.

My understanding with the Genesys, is that if you want, you can replace all the sounds with your own sounds, save your settings as a new folder on the hard drive and call up that setting any time. You can always get back the original sounds by resetting sounds under system or by reloading the operating system.

If you were to do that however, you have to set aside time because if you have to load a sound and you want to put it in a specific section, you will have to page down and or arrow down to get to the spot you want to put the sound, As far as I know there is no way to type in the location you want to put the sounds. This takes time if you are going to load a number of sounds and put them in the sound family bank that you want.