Based upon past experiences with Italian products I can see why a person would be a little concerned. I used to sell Viscount and Farfisa organs 20 + years ago. They weren't what you would call well built. I talked to a keyboard player that worked in a store that sold Gem and he used a Technics on gigs because of all the problems he saw at the store with Gem's. Remember Italians built the Fiat car.

I worked as a keyboard/organ repairman for 10 years and Yamaha's reliability is second to none. I have also used a Yamaha PS6100 in the band that I play in for 15 years. Zilch problems with Yamaha. I would hope, and I think from the comments that I have seen, that the Solton works well. Anything can have a few bugs at first. Don, why do you want to sell your X1?

I agree with Uncle Dave that playability on the job is of utmost importance. Yamaha could have done a better job with the PSR740. My biggest complaint with the 740 is the registration presets. If you use the transposer on a song "which I do a lot because I'm a bass" and change to a different registration preset that doesn't have transposition in it's memory your song goes to concert pitch. Basically you can't change registration presets if you are using the transposer. I find that very annoying. I must remember nothing is perfect.

Tom