Sound will always be subjective, and in most cases, highly personal.

I like my Tyros4 for it's overall sound quality and character, and that's why it sits here in my apartment...it only has to please me.

If it isn't what someone else chooses...that's not my problem.

If you love how your keyboard sounds, you will also tend to spend more time on it, and that has many benefits, not the least of which, is better playing skills.

I thought the G-70 sounded fine, and would still sound great today...but, then again, so would a Tyros or a Korg PA of the same vintage.

Going back and listening to the factory based demos of your present keyboard can be a sure cure for wanting something new.

Ian