Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I think that as to the first question, you may be assured that old models become abandoned, where digital pianos are concerned, for the same reason that a really old laptop computer becomes abandoned: Newer models, of much the same thing... their development and their marketing... are dependent upon and driven by the sense of novelty among many buyers, plus the more extensive features and capabilities available in a more modern digital piano or keyboard.
Have you tried an even more modern digital piano? by Kurzweil or any other brand... I would recommend that, though I know you are in a remote region. Try scouting around on YouTube, after going to the Kurzweil site to just find out the model #s of the most recent models... on YouTube, find the models and a sample of how they play and how they sound.
That will give you an idea of how more modern Kurzweil-produced digital pianos sound.
(www.kurzweil.com is their website as a whole.)
To give Kurweil some input on what you think - which they will probably welcome if it's well-written and comprehensible, and thoughtful - go to
As for the second question... Try the approach I mentioned above, as to buying a newer model than the Mark 12. (Also try a run down memory lane, to confirm whether other, older, models were, well, *earlier* than your Mark 12... try the K250 and its sound for instance, the K250 was esteemed as Kurzweil's most famous attempt, to emulate the sound of a real piano with digital sound and technology.)
And, you might want to estimate what these two Roland products sound like, and consider them:
1. the Roland FP-7:
2. the Roland F-20: