KeybPlayer you could not be more wrong about the polyphony of the korg PA1X.You are doing your maths wrong because you dont know how they handle polyphony.
Although it has 62 notes polyphony it handles that polyphony better than most 128 note polyphony keyboards including the Yamaha. Just because a sound may use 2 or 3 tibre/components to create a single sound, it does not follow that all the sounds are triggered at the same time. Korg have programmed the PA1X in such a way that the keyboard triggers combined sounds so that only the notes of polyphony actually required to make a sound are used when played.
eg the guitar may have a slight puck sound when played on the keyboard gently, it may have a more distorted sound when played harshly and may have more harmonics when played at the higher registers. Allthough there may be 3 or 4 different components that make up that single sound set, they are not all triggered simultaneously and only when required so if you really hammer the keyboard you might use up more poly but only the poly needed to produce the required sound. With my yamaha,if i play a single note that has a combined sound at different velocities the yamaha will still use all the notes of polyphony even if only one is required to play the sound i want, so whether i play soft or hard all the notes of polyphony are used at once.
Play the PA1X keyboard if you dont believe me and try and get a drop out!!! I talked to the Moderator at "Irish Acts" a guy called "sharp" who also designed some of the sounds on the Korg Extreme and is used extensively by korg for sound creation on their keyboards as this was one of my concerns after reading some of the posts on this board about the PA1X. There is nothing to fear regarding poly with the PA1X.
After literally looking for a replacement arranger for at least 3 years my PA1X gets delivered on Tuesday !!!