I'd a) buy another one but b) only a used one.
a)
As a live performer I'm for the most part very satisfied whit what the FG can do. Besides that, I invested an immense amount of time into creating my Live Sets in the way how I need them for my show. Buying another keyboard would simply mean that I have to do that job again. I also created some 50 multi samples which I need and use for my shows. Because there is no multisample file format, I can't export anything from my work and convert it to be used in another keyboard. Changing to another keyboard would mean that I have manually to create 50 multi samples again from the scratch, including every single key zone for hundreds of samples (about 600 right now).
b)
I would buy only a used one. I would make sure that Roland doesn't get my money again. I can't and won't support a company that is unable to create a proper sample file format, assuring that you can take your own work further and use it on a later model. To give a perspective here, if you use a kurzweil/korg/yamaha, whenever you buy a newer model, you simply load your samples that you created on an earlier model right into the new one. A matter of seconds.