I know this is getting away from the topic a little, but I liked the Audya as well. The reasons I sold it were the weight, the location of the pb and mod wheels, and the archaic operating system. I didn't have any instances where I needed support, so that wasn't a factor.
It has excellent sounds, styles and vocal processing and was totally groundbreaking when it was released. It took about a year for them to get the bugs out of it though.
Back to the topic, I started playing guitar in 1961, but I didn't pursue it nearly as aggressively as keyboards. I would have been really good by now, after 60 years of practice!

There is still something about just sitting down with a guitar and pickin' and grinnin', as they say in the south. I have several guitars and they all are special and each different from the other.
If I had to choose though, arranger is my instrument. It is different from a piano or an organ, or anything else. You have to know how to operate it and have a certain level of skill to get what you want from it. It does have the added benefit of letting you turn everything off and playing just a piano or organ, or any other sound alone, if you want. Only time I've ever done that is on rare occasions when I sit in with a band somewhere, usually for a benefit. I will be doing that today, and taking only the Korg Micro Arranger. Only thing I'll use is piano and organ. I won't do more than three or four songs at the most anyway, and may not use it at all, just sing. Every musician in the area will be there and I'm honored just to be able to participate.